As above. is UTD commutable? the AES covers your full tuition plus, if that was a thing you don’t have extra costs to how you are living now. Your second property is going to impact any FA, but again, did your DH get a severance package? Is health cover still being paid in that package? Was the severance in 2019 or 2020?
Sit your kids down and tell them it is what it is, your NMF needs to be on the ball. your AES is probably SOL unless you have other better offers. Your NMF would get a great package at TAMU, no?