I think that they are coing to bring her back really soon. The people that Sloane kinda works for are going to cure her once Sloane has done enough for them. i am just really happy that they are bring her back into the story line.
I believe it is Vaughn because I once read a book about chryogenics and it said that, in theory, that when you come out of it you would be signifigantly older, no matter how long you would have been there and your hair could have grown at rapid speed