Problem with this is that, unless Jim was talking in his misdirection talk, I remember him saying that none of the fae knew about Molly in GP. I've heard quite a few people say the same thing that Lea knew of Molly back then. So did Jim change the back story?
There are things/ideas that he has changed or misdirected from the early books. Read the first description Harry gives of that fateful day when Justin tried to bind him to his will in Summer Knight. It has changed a lot over several books.
Back to the point about Molly, perhaps not by name did Lea know her, but let's read again. From
Grave Peril;
"You have children, do you not?” She shivered
again and said, “Mortal children are so sweet. And
can be bent and shaped in so many, many ways.
Your eldest daughter, I think, would—”
She didn't have to know the name, just she knows Michael has an eldest daughter..
Seen this idea float around here before and I can see this being the case. Jim has said that Harry is an unreliable narrator. So this can be a case that Harry got the soul gaze wrong.
A soul gaze only takes a snap shot of that person in that point of time, and perhaps a view of possible futures... But the future is always in motion so things change, so you cannot say that Harry got the soul gaze wrong.. He saw several possible futures for her in Proven Guilty
1] Molly looking as though she were strung out on hard drugs with a "fey light" in her eyes.
Just checked the dictionary and according to it, "fey" means
giving an impression of vague unworldliness.
That kind of fits with a possible future Winter Lady gig don't you think?
2] Smiling, happy, older, a little plump surrounded by children..
If she decides to take her mother's route, that could very well be her future, there is no
reason to believe that Molly wouldn't make a good wife and mother.
3] Wearing a grey Warden's cloak, her face scared by battles yet to be fought.
Not unlike perhaps what Eb might have seen in his soul gaze of sixteen year old Harry. Harry
and Molly had that in common, possible warlock, but with guidance a brave Warden for the White
Council.
4] Basically a happy young woman, but perhaps a bit more secure..
5] At a desk working...
Not much to go on there, though I guess if you want take a real leap, future Winter Lady doing her job..
6] The last one
looked like Molly, but wasn't, but someone all together evil;
But the eyes gave it away. They were flat as a reptile's, empty. She wore all black, including a black collar, and her hair had been died to match. Though she looked like Molly, like a human being, she was neither. She had become something else entirely, something, very, very bad.
The obvious is if she went full warlock with her mind powers, Molly would be a powerful evil force to recon with. But another thought hit me as I was copying the quote out of the book. Could this be the reason why Mab ordered Harry to kill Molly if something happened to her? Mab said that if Molly became Queen it would be unsettling, not just for the Court, but for everyone. Could the above be the future Molly that Mab saw if she became Queen prematurely? Mab wants a strong Queen to succeed her, but I doubt she wants an evil Queen that's into mind control. Notice that Harry says this version of Molly isn't human, but she looks human, well that defines what Mab is, doesn't it?
Then he comes away with the impression that Molly is a person of power.. That evil does hang over her, but it hadn't gained dominance.. With guidance she could turn out okay.. So was Harry wrong? So far I'd say no.