This will be a challenge for this student, and likely will net a gross estimate only. This is an independent student…and also has a single parent. The net price calculators, in most cases, don’t factor in these things.
And WRT the non-custodial parent, the OP says there has been zero contact and involvement which likely can be verified.
But if this is an independent student for financial aid purposes, I don’t think parent info is required at all. For Profile schools, that is the clarification needed…does an independent for financial aid purposes on the FAFSA need to include parent information. Someone can call financial aid at each college and ask this question…but ask for a financial aid advisor…the folks answering the phones usually are not!