My thoughts are that she was 21 WHEN she got changed to a Vampire, and I think the girl recieving and wearing the necklace called her to her to her job!! When she's at her house and they go into meet the rest of her family, I thought Nanna was the one who gave her the necklace and would of made a commitment about it and Peg's face would've lightened up, oh I can just see so many things happening, I have a hunch Peg's going to go against the rules and fall in love with her subject, who ends up falling for her as well!!! But of course that's what happens when they DO all the required training to be a pet, and becoming a Vampire herself......