After another day of thinking about this to me it is simple- she thought she wanted a dog and she found out she didn't.It happens every day that's why all these dogs are killed off in shelters every day, because people thought they wanted a dog and they didn't.
As for her going back to the breeder- no matter how good of a breeder or person she is, that's not always a guarantee of a good home or forever home.
I too question the parents role in this???My thoughts and prayers are with Ozzy.