Dealing with a person who has mental illness is awful. They can be incredibly manipulitive. As a child of a parent with bi-polar disorder, I think you should cut the son a break. Maybe he seems like an uncaring SOB, but maybe he has had to distance himself from his mother and her illness. My brother has very little contact with my mother. She is often hateful when ill (no she is not medicated, she doesn't think she is sick), and hates my SIL and plays favorites with my brother's children. When not ill, she can't remember the way she acted, or won't. So my brother limits contact, to protect himself and his family.
In your case, you can't speak to delusions. If your friend thinks you have wronged her, it is as real to her as anyhting that has really happened. Telling her you didn't do something she believes you did will just make you frustrated and upset. You need to step back and put some emotional distance between you, for your own sake.
In your case, you can't speak to delusions. If your friend thinks you have wronged her, it is as real to her as anyhting that has really happened. Telling her you didn't do something she believes you did will just make you frustrated and upset. You need to step back and put some emotional distance between you, for your own sake.