Actually TZ they figure that she went to bed around 2230 on the 10th and woke up around 0900...ie 10+30 of sleep that night.
Admittedly she got very little quality rest on the night of the 11th or throughout the day on the 12th...but at least get your facts straight. I don't really see the problem as beginning until the night of the 11th when she commuted in on FedEx.