Heard a rumor from a great source (finally!)
My prediction.... THIS IS JUST MY OPINION!
MC didn't get along all the time with her Mom or even her Dad for that matter, but this particular few weeks, she was disagreeing with her Mom so staying with RC more and more.
WC & JF met through construction jobs working for her and for those she knows. Their relationship was new...and JF has a reputation around Wenatche/East Wenatchee, the entire valley, of having several gf's, not being faithful, getting what he can from women, and his 'life' is falling apart with financial problems, etc.
1.) I believe he either came onto MC and she threatened to tell her Mom.
2.) MC had OTHER info on JF, and she threatened to tell her Mom.
3.) MC 'pissed WC' off and JF wanting to be a super hero, tried to talk to MC, and it wasn't going as planned and JF blew a fuse!
I think they met at the boat launch and I believe the stab wound happened at the Sunnyslope Spec House and he had help after that point. I truly believe he didn't think people would report her car being parked up PC, as soon as it was, and the two guys currently in jail, are being held so they will talk. Their DNA was not on HER or around her or even at Spec House or CB, but it was in her car.
I believe he has worked on the spec house and even the CB at one point.
Rumor has it, he is a POI for LE.
We'll see if I am right! Again, this is strictly my opinion.