It isn't wrong at all. It is good for your mental health. Just so that you really understand what I'm saying, I'm not saying that you accept the way that she is and then go on and try to have a relationship with her anyway. What I'm saying is that it would be healthy to accept that your mom will never be the mom that you need her to be and that you will never be able to trust her. When I encounter someone like this I keep them at arm's length and beyond. It seems like you are still hopeful that she will one day be the mom that you need? She has disappointed you how many times already?