Haverford would be an excellent choice for her academic and musical interests. For a small college, they have a robust music department. There are an orchestra (in conjunction with Bryn Mawr College) and chamber music ensembles all of which are available for nonmajors. Department of Music
The college is on track to complete a new facility for music education, rehearsal, and performance by this fall. You can read more about it (and the other music facilities) here: Music Building Project
Since the college is less than 30 minutes from Philadelphia by train, it’s easy to attend concerts by the world-renowned Philadelphia Orchestra. Back in the Stone Age, my roommate commuted to Philadelphia once a week to take private lessons from a member of the Orchestra.