My point still remains is that previous class are the ones who opened the floodgates and you can cherry pick the reasons why each player left. Shepard in her own words as to why she left Nebraska:
"I wanted to go to a place where
I can develop into the player
I want to be and compete for championships".
Jessica Shepard has decided to transfer to Notre Dame. The former Husker announced in March that she was leaving Nebraska to play elsewhere.
omaha.com
If she received a waiver for those reasons, then why shouldn't other players do the same for arbitrary reasons. The majority of waivers before the Shepard waiver were hardship ones. After that, the NCAA began granting and refusing waivers for arbitrary reasons.