I dunno... I'd guess they'd be in there and a zombie walks in... caught with their pants down, literally
In the previews they show glimpses of somebody trapped in the RV, I think it was Glen. Just speculating that Maggie will be with him.
I don't think the boy is Herschel's kid, but I think I recall him telling Rick that "he wasn't his son but he is responsible for him" in one of the episodes shortly after they arrived at the farm.
EDIT to add: Just saw in the episode showing now that the other young guys name is Jimmy and he and Suicide girl dated for three months and are married.