I think this, sadly, may have been a factor if April did not report RM's sexual assaults on Kayleah to authorities. Even if she did not despise LE, per se, she surely feared their power to take K away if her home was determined to be unsafe for a 12-yr old girl. I'm not sure taking RM in, in itself, was such a horrible thing, but once the relationship turned into something sinister/sexual/illegal, that is when it became something criminal and K's mom was probably scared and tried to handle it herself.
I am just so sad about this girl that I guess I am angry for a number of reasons on her behalf.
I feel like LE suspected RM in K's disappearance as soon as they heard about him, yet left him free to possibly commit sexual crimes against other young girls in the community, and warned no one. His arrest came when it was convenient for LE, but what if he had raped another young girl during those 7 weeks? And if LE had learned of his acts before 3/28, he might have been in custody and Kayleah might never have been killed, if indeed he is guilty of her murder.
It's like a system failure on a bunch of levels to me...his family situation was a mess, apparently which caused him to end up within their family home, etc...and downhill from there...