I've gone through something similar to your friend. My mother would basically lie about my "issues" to Doctors, had a bunch of pills shoved down my throat that I didn't need, and would use the mental health system to have me locked up against my will if I dared to defy her. I spent most of my childhood institutionalized and even spent some time in Juvie when I was 10 because of her antics. She also had me convinced that I was Autistic when I wasn't and told me that I would always need her to survive because I will never be able to do things on my own because of my "autism".

It took her death for me to finally be free of her and even now, I still struggle as an adult. I'm 25 and I still struggle to function in society. Doing simple things such as remembering to brush my teeth, doing housework, or cooking is a struggle for me let alone holding down a full time job or managing money. If it wasn't for a short term housing grant that is paying for my living expenses right now, I would be homeless.

I guess what I'm trying to say is that I know what your friend is going though and it will likely take something major like her mother dying or her being able to flee the state or something to free her and even then, she has a lifelong struggle ahead of her.

Sorry