Hriston
Dungeon Master of Middle-earth (He/him)
He was thinking that while she would be in a coma, she would be getting a long rest maybe? I don't know I'd have to ask him.
Sorry for my cross-editing. As I’ve posted up-thread, I don’t think a long rest is possible at 0 hit points, the most readily available (to me) in-fiction reason being that you can’t sleep/trance while unconscious.