The daughter HAS a huge award to her state school.
If you want her to go to BU, you’ll have to pay for the r&b, transportation, and other costs. If you have a drop in income, BU may consider you for need based aid too, but there is no way to know what that would be unless we know your current income, future income, assets, etc. It’s very risky to think they will come up with need based money.
Take the public school full ride. That’s the safe road.