@jabberjay79 It is a lousy situation. No loopholes. I would not hold my breath waiting for parents to change their minds. Maybe they believe she can work and put herself through school, like you could do 40 years. But college costs have risen much more than wages. Even going part-time is difficult with a salary of 20K and she will have a hard time saving any money.
But enough of negativity. Options indeed include waiting till 24. Also I concur with austinmshauri’s idea to look for schools that give good merit aid. Depending on her GPA and test scores–do you have those? She would likely need to move OOS–goodbye to the unhelpful family. (I’d give mom and stepdad a break here, as even with making 120K it is hard to pay for college out of salary if none is tucked away in a 529. But then there’s the bit about the parents forcing her to move out…) Boise State is an option. She could look into private colleges that would give her application a full and holistic reading. Takes time to research but well worth it. Colleges That Change Lives, for example, and there are dozens of other very good schools she could look at. Roughly, colleges and universities ranked maybe 50 to 125.
Whenever she does return to college to complete her 4 year degree, I would fully recommend borrowing whatever she can to get through. She already has proven herself by having completed 2 years, and most students who drop out and leave themselves with debt and no degree, the worst outcome, do so in the first 2 years. She will not be in debt for 100K or more (you cannot borrow but so much as an undergrad) and the last evidence I saw, college grads earn on average 1,000,000.00 more lifetime than HS grads.