1. Do we really know if Jayme was in the residence at the time of the murders? The Sheriff says Jayme was there and was taken but we do know specifically why he concludes she was there, possibly from the 911 call but we do not know this for sure.
No to both. To add to the strangeness, it seems they didn't realize she was missing until hours later. It makes me think her voice was on the call, but someone who would recognize it had to confirm that it was her by listening to the recording. That's good info to keep hush hush.