Ruby was freaked. She'd woken up in some womans motel room and upon inspection there were all sorts of crazy stuff she didn't even want to really think about uses for. And a KNIFE. A big knife that she should really have been creeped out to find but guessed it was pretty useful all the same considering she was in a scary weird motel room in Kansas.
She had made a snack, finding the basics of food to work with and constructed a sandwitch and found soda. There was also alcohol but that was probably the womans.
She was in the process of eating the snack when the knock came on the door and she answered it quickly. Well, she opened it on the latch at least peering out, she figured this had to be Sam, who else knew where she was, but Momma had always told her about talking to strangers, even kid ones, so she smiled politely and decided to be smart about it.