Seconding Lawrence University in Appleton, WI, which also has a wonderful Conservatory, and has more fluidity between the Con and non-Con students. For instance, at Oberlin, only Con kids can audition for the ensembles, and there are separate"College" only groups. Oberlin College (non-Con) kids can audition to take private lessons from Con professors, but we were told almost never are accepted – they can freely take private lessons from upper level Con students. At Lawrence, all the ensembles are open by audition to all students, not just the Con kids. While the Con kids are expected to be the stronger, more competitive applicants, the faculty we spoke with made clear that non Con kids can, and do, get seated in the most competitive, highest level ensembles.
Some other Ohio schools to consider include Denison which has strong connections to the Columbus music scene and is building a new performing arts facility which will open in fall '18. Also, Wooster has a separate music scholarship, by audition in Jan/Feb, I think. Skidmore is another one with highly competitive music scholarship for non-music majors.
Explore alternatives, encourage your daughter to keep her grades strong so Admissions sees those after first semester. Bottom line, admission as a double degree student at Oberlin – to both the world class and highly competitive Con and to the College, as a top 20 LAC – is very competitive. It’s hard when you feel your child’s disappointment, but a deferral does mean she is considered competitive for admission.