Sounds like she got a very generous award.
Looks like BU lists $15,000 for room and board.
What does the cheapest freshman room and meal plan cost?
If your D contributes $8,500 with loan and summer job earnings, can you pay the remaining $6,500, plus help with travel costs and books?
If not, then she can go to the local school on the full ride. Even if it’s not her first choice, she still gets to go to college.
How does the ranking figure in, if she is interested in art? Do both schools offer the major she wants? That’s what should matter.