I think it is possible the body was disposed of on that early morning trip but just as possible that she did so in the days leading up to October 9. the 9th being a Sunday troubles me. Why run this earrand for bleach in the early morning hours on a day when your other children are not in school and around the house to witness the cleaning spree? Why not do that on a weekday, while the kids were out of the house and at school?
So either she could not take the smell any longer over the weekend and felt a need to clean up immediately, or Jhessye had already been removed and she was still trying to deal with the cleanup of the scene and the odor. Or Jhessye was indeed disposed of that morning, as the other children slept.
According to this
http://www.calendar-365.com/calendar/2011/October.html the sun rose on the 9th in Scottdale at 7:28 a.m. I could not find the specific minute the sun rose in Glendale. But going off of the above, she was up and moving and purchasing her bleach a full hour before the sun rose that morning.
I am liking the morning of the 9th more and more as the possible disposal time. Do we now what the walk would have looked like from home to walgreens? Dumpsters along the route? Alleyways that might be quite and less visible along the way?