You do mental illness isn't just caused by traumatic experiences? Some people are just born with different personality types, and unstable emotional states as an innate part of their being. "I insult her cause I have nothing else to do..." you've just proved you're not being sensitive and doing as much as you can to improve your relationship with her. So why don't you try to stop insulting her, be nice to her, and then you can complain if she isn't acting well. God you're so self-absorbed it's disgusting.