Yeah, teen are normally rebellious but in an extreme situation like this I'd assume that they'd cling on to things that are familiar.  Rebecca would naturally be the weakest link (right now) and Tony would likely grudgingly go where his girlfriend went.  If Carl showed that he was on their side when the time was right (say going back to Rebecca's house for pictures or something like that0 he could also win points.  It'd be a slow process, true, but could be an interesting development.<br/><br/>Especially if being "left behind" begins to become a habit and Carl can show that he has faith in the teenagers to do what needs to be done as well.  *shrugs*