I think the scream was PR when she was pulling on the noose. It was a horrifying event for her.
I think everyone in the family knew that this child was being sexually molested, they came upon her nearly dead, irreparably harmed, and made a decision to not call LE because of the stigma of incest and psychiatric disorder and knew she was not going to survive intact and 'she'd be better off dead" and so would they because they wouldn't have to tend to a child in a permanent vegetative state or have her as an inpatient, unable to defend herself from who knows what. Although it was 1:00am MT, it was still midnight PT and therefore the decision was made to make her a gift to Jesus on his birthday rather than wait until she died on her own. They had a lot of staging and prepping and practicing to do and had to be up early to jive with the vacation departure schedule they were supposed to be on.
Sometimes I think JR was in on the staging and sometimes I think he was very confused by the events he awakened to that morning. PR was in on it from the moment she learned of what BR had done. BR was most likely punished to his room.
I think PR laid on the bed, fully dressed and waited for JR to go into his bathroom, then she pulled the covers back and went into acting mode, making up her side as she rose.
Neither of them ran around the house screaming JBR's name, looking in closets, under beds, in cupboards or searching every possible hiding place. No one went to the garage. No one went outside. No one called neighbors. But, they were perfectly dressed and well-groomed when LE showed up 4 minutes after the 911 call.
Who gets up and does all that dressing and showering and make-up and such BEFORE making coffee? No one.
BALONEY!