It's hard for me to see the windows unless it's an awfully slim person with a boost. I can see going out more than going in b/c of the noise from scrambling in. Going in the average window of a house on a foundation, w/o making noise, is difficult enough, a trailer is way more difficult. I don't see how they'd jimmy them either (from that high up, and stay quiet).
I could understand them not finding KR until later if it weren't for DS having plans to meet up w/him. It looks like it was DR & CR1 and their children, w/GR being in the wrong place at the wrong time. BJM called her father and they found his daughter, his sil, and grandchildren murdered, along w/GR. At that point LE comes in and they're questioning them for hours, but, then, news leaks out. Like I said, I'd have already called my kin if they didn't show up, just because, but, when I see my family on the news, then I'm gonna definitely be calling and going out there. Not saying he did it, but something still doesn't set well w/DS version of everything.