Just thought about the timeline at the farm. It was 25 years ago and grace seems to be in her early 30's of at least the actress is about 30. The guy at the farm mentioned a kid and Jane thought he meant 20 -25 but what if the kid was actually 5-6. The two guys could've tried to rape her or her sister so she and someone there killed them. Plus it would fit that RJ had accomplices and helpers early in his/her career which would possibly mean gvp needed it where she was young and weaker. Her sister might have been killed by those two guys or raped then killed herself later in life due to trauma.