Yes, sounds bad. Unless your friend is a teenager, this pops red flags. But she won't listen to you until she has her own suspicions... You'll have to wait for her to ask you for an insight first. Don't take the risk to lose her trust.
It might not turn out BADLY, but it surely isn't very healthy to me. Maybe this person is confusing their own feelings with their need to be heard.

I just wrote something about this on another thread here. Sharing delicate subjects to bond is something to be suspicious about. When you fall in love you won't be thinking of tragic stuff you might have in your head, you want to walk under the sun forever during the time you're together.