I haven't been in your shoes, but I've been near enough. I had some traumatic things happen in my family when I was younger, and my folks forced me into therapy I didn't want and didn't think I needed.

Going to a therapist is not a bad thing. It doesn't mean there's anything wrong with you. In fact, it's an opportunity you can take advantage of.

The therapeutic relationship is a unique thing when you're younger. Your therapist is the one adult in your life you can be honest with about your problems with no worries about them using the things you share with them against you. They're not allowed to pass on any of the things you tell them in session to your parents or anyone else. Well, unless they feel you are a danger to yourself or others, and you sound like that's far from the case. If you have problems in school, with your family, with your friends, your romantic relationships... your therapist can help you navigate those issues and get the outcome you want. Or the outcome that's best for you. You get all the benefits of tapping into an adult's experience in dealing with life's problems without any of the negatives of trying to talk to a parent.

I strongly suggest you go, and go with an open mind. You don't have to focus on what your mom wants. Get to know your therapist, get comfortable with them, and use your therapy sessions to make your life better.