Speaking from experience I can say that parents can love you completely but still have a toxic or damaging effect on your life. Your mother's response to your thoughts of suicide was awful. She made it all about her and in doing so dismissed your actual problems. This is important to address with a psychiatrist, therapist, or both. I know you want them to acknowledge your mental health issues, but maybe ask why you want that. Is it because you want them to help, or is it that you are frustrated by their reaction?