Cost may be a factor for you. UNH has a train to Boston btw.
UConn is more big time sports wise. UNH has Boston access, closer to a cool coastal town - Portsmouth. Bentley is more focused - with Brandeis, I believe, cross registration.
Does she have a major in mind, business is just an umbrella. If she changes her mind, would Bentley have another of interest?
Bentley does well career wise. UNH is the easiest in of the three. No where do they mention ECs that I can see as a need but the CDS says considered.
All three are fine. UConn not an easy admit. UNH is relatively and Bentley in the middle.
They don’t say on the website but guessing Bentley is need aware. If so, ability to pay can impact.
Three fine but different schools. So hopefully the student will feel most comfortable at one.
Good luck.