First, and I mean this with all due respect, please don't try to diagnose someone else.

Second, I suggest that you present her with the facts of being homeschooled rather than just get into an argument about it. As Rohag said, there are alternative programs but you need to have the information in hand if you want to present an effective argument.

If you currently at school, can you go to a councilor there who can talk to both you (and eventually) your mom to give you advice on seeing an MD for help?

I'm sorry it's so difficult to be heard when you are a minor. I hope someone else has some better ideas than mine...