I think you should be smart and package your kid as an Art major. Look at it from the perspective of the college: they could admit an entire class of Bio majors, or CS majors (or whatever) but they are not. Let’s say they want 100 Bio majors , 100 English majors, and 100 Econ majors ( to maintain some diversity in the class)
Well then your bio major kid is going to be competing against kids who have done science olympiads and research with professors in science and science internships. She will not fare well in that evaluation
But if she applies for Art and has compelling evidence of talent, commitment, etc in that field she will be more likely to get in. You can always switch majors later. How easy or hard it is to do depends on the school of course. In many Canadian universities switching from art to bio would be impossible, but for many US schools it would not be so hard
But if your family income is <50K, as I understand from the original post, I would really recommend rethinking the plan and targeting wealthy schools. Those places are most likely to give your kid a full ride, all expenses paid, no $ out of your pocket. This is how a private school can end up being cheaper than a state school. When those places say you pay nothing if your family income is under X ( $150 K at some places) they mean it.
A wealthier school can also be more generous with aid. Our financial aid packages from private schools varied wildly–some thought our out of pocket cost should be $81,000; others $50,000. We did not get any aid offers from public universities in the US. I think looking at schools with healthy endowments that are looking to recruit lower income students might be a useful strategy in this case—