I don't know the answer, but I think many would recommend your daughter use the last name that was provided by a parent or guardian at or near the time of her birth. Typically, there are future background check and security clearance considerations to contemplate in providing a name other than what was previously provided to the government. In the past, the name provided by those seeking military service was the name on the certificate of birth, absent a subsequent legal name change. The reason I suggest providing one's legal name is because adopting name preferences that contradict legal documents may present immediate application hurdles or future inquiry. However, you may want to ask U.S. Air Force Academy Admissions.