My cousin and I, have never had that great of a relationship, it's always been rough, we never see eye to eye. She is very insecure and is always asking me if I hate her cause she believes I do, I know I am mean to her sometimes but, she has also said some hurtful things to me,but I don't let them get to me. And it's not that I hate, but she get on my nerves sometimes. So a few days ago she opened a chat on my brothers laptop and read some text between my brother and I, where I said a few things that bugged me about her and so did my brother (which is she totally invaded his privacy by readind the texts). Then she decided to post on social media stuff about family betraying her and she started acting weird around us. I didn't say anything about it to her, I feel bad about it but then again she was not supposed to be reading others text and she thinks that we do hate her. Should I apologize? or just leave things the way they are.