Abilify is extremely pricey, that is for sure.

And group home is not a fancy hotel, either.

There is a solution - it is just not an easy solution. It is not easy for anyone and especially not for you given your situation.

Basically, you can tell your mother that you need her consent or you will call the CPS. That you do not want to get her in trouble and it is not your desire to call the CPS but you have to advocate for you needs. Hopefully this will be sobering for her... a wake-up call.

Note that this is NOT blackmailing, but drawing the line. Still, very hard to do. Ideally, if there is an adult who would do it for you that would be best. Somebody whom she respects enough - is there anyone around for that? Aunt, uncle, neighbor, etc.?