Hotchicken,

I just read this. So basically - in real rather than legal terms - you are not the main guardian. You don't take the teen to a dr because you fear your parents' wrath. That means that you are not the decision-maker, and your teen knows it full well, and thus provokes you.

This is your reality.

Bring the legal arrangement in line with this reality by appointing one or both parents as legal guardians, as many people above have recommended. You are living in a warped world being a 45 year old woman who gets sent to her room by her parents and yet is expected to act in full legal capacity of a parent. Simplify the situation and make it consistent - they want to call the shots, so let them do it, but they have to assume full legal responsibility. Your teen has one more year until majority and she can act out and get you in legal trouble because you will be responsible for a minor. Do you need more stress? I think you have too much stress already. Dislodge this.

I would contact legal aid asqq