I think there might be a little more to Ron's story than he's letting on. There might be a possibility that he didn't pay a dealer or something, and it does happen! They will kill you on deals gone south. I have known at least two people killed in broad daylight over deals gone bad, and we're not talking Brooklyn, were talking nice, middle class rural communities and suburbia.
Despite this, I think he is genuinely surprised to find his daughter gone, I think he thinks his girlfriend is an idiot, and no help ,and he's trying only to controll her immature responses to the press. I think he has an idea why his daughter is gone, but I don't think he's going to tell LE that this is all related to money he owes or whatever.
The sad thing about this is that he does seem to be a family man in the making, he holds a job, supports two kids and supposedly shelters his seventeen year old girlfriend. If he had gotten a few more years under his belt, he could have grown out of this ridiculousness, drug abuse and what not, put it behind him, and made a life for himself, albeit a modest one.
Something to me is saying, he screwed the wrong people at the wrong time. And drug dealers aren't stupid like a certain CMA is. They aren't going to find this girl burried a mile away in a laundry bag.