What happened to the girl how was training to be the Receiver of Memory?

The previous Receiver-in-training was named Rosemary, although it clearly pains The Giver to say that name, and she came to him in much the same manner as Jonas. The Giver loved her, as he does Jonas, and it hurt him to transfer his pain to the enthusiastic and lively Rosemary, so at first he gave her only happy memories. Rosemary asked for more difficult memories, so The Giver gave her the loneliness and loss of a child taken from its parents.

He gave her more happy memories after that, but now that she knew pain, she asked him not to spare her. He did not wish to give her physical pain, so he gave her poverty and terror instead, and one afternoon, Rosemary came to a decision. After hugging him and leaving the Annex, she asked the Chief Elder for release, which at the time was not against the rules.