Board Thread:General Discussion/@comment-29197815-20160915100826/@comment-24821641-20160915103222

I think it's more likely Toriel just gave them a proper burial, I think it's mentioned Frisk was unconscious for a pretty long time so she'd have time to.

Anyway, Chara wouldn't wake up even if the humans were resurrected, their soul broke along with Asriel's.