Maybe Harry was deliberately filtering any women that weren't forcefully on his mind? Well, apart from Valyries.

Because of the one woman who's death overshadowed all the rest of his life.

 You could be right, however I think it is more along the lines of because he lost his love and happiness, its too painful to see other people feeling it and having it.

I think it's because Harry wasn't thinking about them much. The typical Harry Dresden book is about one weekend and mentions every one he happens to interact with during that limited time frame. Twelve Months is about Harry spending a year to start moving on from a very traumatic battle while fully accepting his current place in life. Lacunna, Georgia, Butter's girlfriends, and a bunch of other minor characters weren't relevant to that story so they weren't included. I hope Jim will mention them soon but I'm not surprised that they aren't mentioned at all.

Yes, and no, because for the last few books you don't see Toot without Lacunna, and it isn't natural unless there was some kind of breakup for Will not to mention wife and child.  So it really isn't a matter of out of sight out of mind, it's just very odd.

None of Harry's friends' significant others show up in this story, Charity is there for a second and if you blink you miss her, and is probably mentioned by name just because she's the one actually raising his child. But it was one of those weird things about the book.

 At least she is mentioned, though all through the books while Harry talks about her a lot, we don't usually see much of her.  Lavunna on the other hand, Toot was totally smitten with her and I thought as of Battle Ground and Peace talks he was starting to grow on her as well.  So very odd, she isn't seen or mentioned by Toot or Harry.  Will seems to be practically living at the castle these days, but says not a word about wife or child, though in past books Georgia is always a part of the picture if Will is in it.  The pack is mentioned, they are present a couple of times, but no word of Georgia or the girlfriend of Butters.

I just started a thread with the same question.  Perhaps someone paid her ransom?

As for Georgia and her child I strongly suspect they evacuated after the battle… to keep the child safe.

  Perhaps, but even if this were so, why didn't Will even mention his wife and child?  Toot was totally smitten with Lacuna, yet he doesn't mention her at all either.

   I asked the same question, also where is Georgia?  I got no replies, not even a theory.. 

No, you're arguing against the evidence:  in the faerie-tales, children who are bargained-away like that don't have the Faeries (when they come to take possession) dance around the issue or ignore it.

 There is evidence, 1) Margaret did make a bargain of some kind regarding Harry.  2) While she made it of her own free will, the fetus, the future Harry Dresden, didn't.  Mab needed Harry to agree of his own free will to be her Knight, even though he absolutely did not.  However all through the first part of the series Mab was pretty confident that eventually he would. I think in Changes the reason Uriel intervened like he did just wasn't because of what Lasciel did,pushing Harry to suicide, but because technically it wasn't just her, but Mab who violated Harry's free will.  Yes, it was Harry's choice to become Mab's Knight but it was the least bad of a number of bad choices to save his daughter.  Uriel helped him make that choice as well, then Harry chose to die once his daughter was safe rather than become Mab's servant.  Enter Uriel again with his seven words, words asuring Harry that he still had free will.  In my opinion hinting at a loop hole that will eventually enable Harry to get out from under the Winter Knight's mantle.

Sometimes they can be tricked, or further bargained-with, but they come in clearly asserting their claim.  That Mab did not do so says there was no such bargain.

No, it doesn't, Mab isn't stupid and she knows Harry, if she made that claim, it would backfire on her. 

We don't know the details (specifically, that it was a "bargain," nor that Mab was explicitly involved).  Only that Harry will be really, really pissed off at Lea when/if he finds out.  Jim dropped only the one minor nugget, AFAIK (I'm happy enough to be mistaken, if there's more info out there!).

No, there isn't but my theory is very plausible, Harry will be very pissed, at least at first anyway, when he finds out his fate was decided before he was even born.

I think we know Margaret didn't make a "deal" for Harry to become Mab's, because Mab didn't just take Harry -- she needed Harry to agree.

It's still possible that Margaret made this deal. Say she had, Mab still just can't take Harry for the purpose of being her Winter Knight, as you say, Harry still has free will. However murdering or arranging for his father to be murdered, sets the small child, Harry adrift, which it did.  Then Mab by way of Lea can lead Justin to Harry so he can be properly trained and more useful to her when the time comes.

The thing is:  Maggie need not have made that deal.  Mab could still keep adding pressure to Harry, manipulating his situation without touching him, offering him power, cutting-off his other options.  She is free to advance Winter's interests as best she knows how, and Harry declining to take one lure doesn't prevent her from dangling another, and another... Every choice remains Harry's, it's still "free will."

You are forgetting the phoney bargain Lea made with a frightened 16 year old Harry.  Harry agreed innocently thinking Lea was helping or protecting him in his fight with Justin, in truth she gave him nothing, but now Winter had it's hooks in him.

I recently saw a theory that Rashid is one of the old Gods, like Odin.  One thought he *was* Odin (just a different Mask) because of Rashid's eye-thing; another pointed out Rashid being maybe Egyptian, and could maybe be the god Horus, who looses one eye (but it's later restored to him).  Also in the Egyptian pantheon, we have Anubis who's explicitly a gatekeeper (one of the god's formal titles).  So... lots of potential links, there!

None of that would surprise me, I do hope we see more of him soon, he's one of my favorites.

I doubt she saw through Mab's machinations; that's tough to do!  If she had -- and thought Mab was wrong -- then she'd hardly have picked Mab's Handmaiden to be Harry's FG!  Since she was inside Raith's own household, though, I think it very likely she managed to find info that he (and/or his allies) didn't want her to have; and of course she was already suspicious of White Council shenanigans, and likely could have seen through some of that plotting (particularly given Rashid's testimony that he and Margaret sometimes met on a friendly basis, as fellow Waywalkers)

Did she pick Lea?  Or did Mab pick her for Margaret after the fact?  Remember a bargain was struck between Lea and Margaret, or Mab, Lea, and Margaret.. A bargain that will really piss Harry off when he finds out what it is all about, namely with Lea.  Just a passing thought, but it may be that Margaret signed up her fetus, the future Harry Dresden to become Mab's Knight in return for his protection, since as a star born he would be a target.  So free will is a big deal right?  If this is true, Harry never ever had a choice, he would be set up over and over again until he agreed to become Mab's Knight. His choice, free will, right, well, yes, and no, that point gets fuzzy.  Actually I think Uriel had something to do with the bargain as well, because it will turn out that because of the bargain his mother made of her own free will canceled Harry's free will, because as a fetus, Harry really had no say.. So at some point,Uriel will inform Harry that he can turn in his Winter Knight's mantle any time he wants, because his free will was violated by Mab,Lea, and his mother, when she agreed for him/fetus, that at some point he would become Mab's Winter Knight.  I think Margaret was well aware what she was agreeing to on behalf of her fetus.  Margaret also may have consulted with Uriel before hand as to the fine print in Fae Bargain contracts.  Uriel assured her that there was indeed an angelic loop hole in her bargain with Mab and Lea, that though Uriel too could foresee how important Harry would be in the future fight, that he would be more effective as Mab's Knight, Uriel also knew that fetuses have no free will.  So Uriel carefully explained that loop hole to Margaret, that at some point should Harry wish it, her future son did have the choice of a get out of being Winter Knight free card.   I am not saying that Mab would have overlooked this little detail, but then again, archangel might now and again outsmart a Fae Queen.