Getting sleep on an airplane IS NOT quality rest. That is why the FAA and the DOD does not constitute it as rest. In short, the noises and vibrations keeps a person from enterring the normal rem and deep sleep cycles.

I've flown airplanes which had bunks installed. And even then, assuming I actually fell asleep, I always woke up feeling bad because the quality of sleep wasn't good.

If she was rested, then she probably wouldn't have been texting about how she was tired.