The story strengthens the possibility that Elaine is Nemfected (or is a Nemfector). Morgan's letter associates DuMorne with Nemesis, which associates Elaine with the Adversary as well. So was it that Elaine was enthralled or was she successfully Nemfected? Furthermore, was it Elaine that Nemfected Aurora?

We know from Summer Knight that Elaine is extremely well-versed in subterfuge. We also know that she is keeping a low profile, pretending to be minorly gifted in magic, which as many have mentioned above is quite suspicious.

So what's the long-term implication? Via the events of White Night, Nemfected Elaine could have become a pivotal figure in the fastest-growing supernatural network of those with minor magical talents: Paranet.