She is a Dependant as long as she lives in that home. That is fact and nothing can be changed until she moves out. Tell her to move into married student housing, or what ever they call it. She cannot accept financial help from her mom or father again or she will still be classified as a Dependant. This is what they see...If you pay for my housing and college fees then you are supporting me and I don't need assistance.... Unless the family is willing to foot the bill for her living arrangements and school bills she must be more independent. Just because she is not claimed on someone else's taxes does not mean she is independent. She has to be living on her own and there may be a time limit on that too, perhaps a year of independent living...that would be determined by the financial aid advisor.
She does need to go to the financial aid office and visit with an advisor. She may be able to apply for scholarships based on academics, on religious affiliations, there are families who lost a beloved child and just want to help red headed blue eyed girls...REALLY! There are family foundations, college work study, on campus jobs, displaced homemakers, minority scholarships (being a single mother can be the minority factor not necessarily race), she may qualify for an in college award of some sort if she has declared a major. There is a way if she is willing to spend hours and hours and hours in front of a computer monitor looking at money stuff in the financial aid office.
I went to Jr. College to get my basic ed classes out of the way, talk about a cost difference...Jr. College classes were $45 a credit and at college they were hundreds of dollars per credit hour. I got a scholarship to a big name state college and didn't have to pay a dime for school, books, fees, and had a little spending money left over, etc.... I hated that school, it was culture shock. Transferred to a different state college and loved it. I got low income housing on campus, food stamps, a monthly check from the state, a medical card for my daughter (students get medical care through the health center), and all the financial aid was still on top of that. My yearly income, (including all the housing assisatance, food stamps, etc...) the first year at the second college/university was over $25,000, back in the 80's. I was financially set. I DID NOT GET ANY LOANS.
I know it can be done and done well. She just needs to visit with the financial aid advisor and then decide to move on to campus in the student housing for families. She need to apply for low income housing and get on the waiting lists and do everything she can to move out and pay her own way so she can qualify for the money to go to school.