So now I am left incredibly frustrated and even more stressed. No one will help me and I don't know what to do. I fear my mother is going to be fined or something even worse because I can't attend school. But the school will not accommodate my needs. Please help me.
I have no way of knowing why you have lost your "drive" for school -- the difficulty of the course work compared to your former school, having difficulty making friends, or just plain having lost your motivation for lots of things, including school, because you are depressed. You are absolutely right in wanting to take care of the school situation, but you also need to address the reasons why you are feeling so unmotivated and depressed. Leaving school is not automatically going to fix all the inner turmoil that you're feeling. In fact, you may find that if you see this as a solution to your depression, you will be more anxious when you discover that not going to school has not solved your emotional difficulties.
If homeschooling is indeed the best educational route for you to take, your mom needs to network with the homescholing community in the Sonoma area to get the appropriate support and advice. In most states, parents have to submit a homeschooling plan that must be approved by the local school authorities. Homeschooling families who have done this successfully are the best resources for this assistance.
I'd really like you to see a therapist. It might even be a good idea for you and your mom to see a family therapist together. Please suggest this idea to her. You need some sound, caring professional guidance and support right now. Once you get this help, I am sure that you will begin to feel more understood and more hopeful. Thanks for writing and keep me updated if you'd like.