First night in Gotham and Gretta ends up in the wrong place. The bad end of Gotham. She ran into Joker. He was a terror, a legend, a murder, an abuser and a psychopath. He gave her a contract. He would let her have anything she wanted and she would pretend to get kidnapped by him. Saved by Robin and learn everything about the Batfamily. She accepted. She didn't know it but Joker planned Robin's meeting with Batman. She did as she asked and told Joker there was nothing interesting to them. So he decided to put a different plan into action, handing my sister a gun and abandoning her.