SDSU appeal for accepted transfer student who declined

My daughter recently got accepted to SDSU as a transfer student in sociology. Her dream school! Unfortunately, she quickly declined the offer of admission because she also got into UCSB - she was already living in Santa Barbara, in school at SBCC and already obtained housing for next year. She thought UCSB had a better reputation but as she got to know UCSB she very quickly regretted her decision and is now sending an appeal letter to SDSU. What are the odds they will let her back in? So stressful. Thanks!