Cornell summer Engineering Experience

My D got accepted to Cornell Engineering Experience summer program 3 days after she sent her application. She applied to three summer programs, this is the only one she has gotten back so far. But the issue is she has to respond and pay full tuition 5 days after receiving the acceptance email. I don’t think she will receive answers from the other two schools in 5 days. What should we do? Thank you very much for your advice.