For all I know, she could come back from before she even turned. [ that would be a trip. that caroline was ditzy and difficult for liz to deal with. she doesn't think eric would be able to tolerate her. ] With the way this place seems to work, I don't think that'll be the case. But if she does come back and doesn't remember anything that happened here, we'll have to do what we can to help her. She always values friends, no matter who they are and what's happened. She'll come around with time.