The truly hilarious part of the Daisha Simmons-Kristy Curry situation and the Leticia Romero-Jeff Mittie situation is that both schools had just hired coaches that had recently left their former institutions.
So the coaches were allowed to leave, even with contracts in place (though presumably there was a buyout), to coach at another institution but the players, especially one who has graduated and was not accepted to that university's graduate program, cannot be released to play for one.
As an aside, even if the institution has good reasons for denying a transfer (hypothetically...interference from opposing coaches and improper contact), there is no way the university will win the public relations battle (especially in an era where the public recognizes that coaches come and go and the NCAA does not put the best interests of the student-athlete as its first and foremost priority).