You sound really alone and lonely. I’m so, so sorry that your mom hasn’t been able to be supportive. I can only guess that she is terrified that something is going on with your stepdad (since they fight all the time) and that she can’t cope with the idea so takes it out on you. That doesn’t make it the least bit okay, especially for a therapist who of all people ought to know better. But therapists are people too and sometimes they can’t see their own families as clearly as they see their clients’.
You have every reason to be sad and upset and angry. I understand that cutting may distract you from your emotional pain but in the end it only leaves you with another problem. I think you figured that one out already. So how do we find you some help?
I located a hotline in your state: 1 800 572 SAFE. I talked to a very kind woman there who told me that anyone who answers the phone can direct you to people who can talk to you and help you decide how to handle what is going on. Please give us therapists a chance. Most are genuinely concerned about their clients and want very much to be helpful. Often we can make a real difference in people’s lives.
You definitely need more help and support than I can offer in a letter. Please contact the hotline. You can stay anonymous if you like so it won’t hurt to give them a call. I’m away for the rest of the month but will be back at the beginning of August. Please write to me then and let me know how you are doing. I care.
I wish you well.