We hate Parents

Janet Rebecca Tench(Mostly called Beck) is the Niece of the FBI Agent Bill Tench. She has been living with him, his wife and their adoptive son for 2 years since her (abusive)parents were killed.
She was always very interessted in Bill's work. She helps him keeping his office organiced so she often got a good look at all the stuff he is working on.
One day Nancy leaves Bill because he is "neglecting" his family so he moves out and Janet comes with him. Their bond gets stronger and she comes with him no matter where he has to go(for work).
Bills Partner, Holden Ford starts interviewing the Co-Ed killer and convinces Bill to come with him after the second interview. Janet stayed at the hotel.
One time it wasn't planned for them to stay in California and they only booked the hotel room for 3 days. They had to leave the hotel before 14:00 but they had an Interview with Kemper at 16:00 so Bill had no choice but take Janet with them. He really didn't want to but Beck was extremly excited to meet the Giant Killer. She was fascinated by serial killers and had read about him several times.
No one would have thought that Beck and Ed would get along so well. Maybe even to well.