I hope i get a pleasant surprise and they bring on the other girls for old times sake for a secret surprise.(I haven't heard anything to the contrary yet but that would be a nice twist) I mean they are reminiscing about the past and these girls graduated eastland with the rest of them even if they weren't necessarily on screen all the time after season 1. They still have memories and Yes they do know Jo well also despite the errors in the Little Chill script!