I have a friend whose father died and she won't stop talking about it so I think I'm going to end the friendship.
What in particular does she talk about?
She tells me how he died and what he did for her everyday, it's like torture
I'm sorry you feel that way. It is wrong not to be there for a friend that is grieving. she may just need more time and finds comfort with talking to you about it.
Fuck you, you don't understand.
I understand that your friend's struggles are making you feel overwhelmed, but as her friend you should try to be more compassionate and understanding. Grieving is difficult and we all do it differently. You should take pride in the fact that she looks to you for support.