You are required to provide Parental information. If you mom has yet to file you can use her W-2's and estimate. Once she files, you would update your information.
Being self supporting never rules out having to provide parental information. That rule went out more than 15 years ago.
Don't rule out that you won't qualify for aid because your parents make " too much money". You may be surprised. And if they do make "too much money" and it disqualifies you for a grant, maybe they will use it to help you pay for school as they should.
Further comment: If you want to be able to apply for federal aid it requires your parents tax information, that can be estimated since your mom hasn't filed. It is so important to fill out the FAFSA even if it is with estimated information and soon! State and school deadlines are usually prior to March and it gets you in the selection. You can update later when she files, but at least you are in the selection.
As far as other aid there is a very reliable, no scams website that can help you with scholarship searches and other types of aid that will not require parental information. Never pay for a scholarship search or for financial aid application assistance.
http://www.finaid.org This is a great website. Many financial aid professionals use it frequently.