There are several schools/programs that give very generous merit scholarships to NMF but there are others that don’t give anything. You are not going to get those schools to match an NMF offer (100% COA) from another school. From her application, the schools all know she’s NMF and they didn’t offer a scholarship based on that.
It may be too late now, but Florida has a program for NMF to get COA scholarships to 12 schools. Kentucky and UT-Dallas have generous programs, many schools give larger scholarships to NMF.
You have one full ride that she’s been accepted to. Go with that school.