OP was pretty clear that their mom lies on her taxes. I assume they know what they’re talking about.
OP, if your mom isn’t going to be able to provide accurate information for financial aid forms you’re going to have to pay out of pocket for college. Is she planning to help you pay? If not, it might not matter to her. But if she’s going to help she may want to consider the aid she’s giving up by lying on federal forms. Don’t make the mistake of committing fraud yourself. The consequences aren’t worth it.