I don’t know but according to the New York Post:
“She also refuses to cooperate with any prosecution against her father, who was engaging in sexual conduct with her,†the DA said. The woman had only recently re-connected with her father through Facebook.
http://nypost.com/2016/02/24/charges-dropped-against-teens-in-brooklyn-park-gang-rape/
This has happened before - children separated from their parents at an early age and then reunited when they are adults and the relation ship turns sexual. I have read of this but, it sounds like the woman has some mental issues that fueled that fire.