notesmom, there have been threads before on CC regarding clarinet study that you might find helpful. Here’s one: http://talk.collegeconfidential.com/music-major/1404150-college-with-good-clarinet-professor-p1.html
In answer to your questions in your original post: What should she be doing to prepare? This is a question for her teacher–she needs good solid technique and musicianship as well as preparation on audition pieces. So her teacher can give advice on her strengths and areas for improvement.
For summer programs, there are quite a few–again you can find lots of ideas on various threads here on CC. In addition to the various festivals, ARIA is a good ‘boot camp’ kind of experience (http://www.ariaacademy.com/), and there is also Buffet Summer Academy for clarinet (http://www.buffet-crampon.com/en/actualite/buffet-crampon-2015-summer-clarinet-academy).
There are good clarinet teachers all over the country. Since you’re interested in East coast or Midwest, ask her teacher for any recommendations regarding teachers. And, take sample lessons if you can. The challenge is finding a school environment where your daughter will fit in well, and then also having a clarinet teacher she will enjoy working with and learn from. The tippy top rated clarinet teachers of course have programs that are extremely competitive–sometimes only accepting 1-2 clarinetists a year.
I have been through this whole experience twice with my clarinetist son, so please feel free to PM me at any time in the process if you have any questions about anything. I can also give you more specific information on teachers, programs and colleges/conservatories.There are few other clari-parents who come on CC every now and then as well. This is a very helpful forum. Welcome aboard!