yeah, just kind of a strange story but it happens (the DND knocking)...I'll throw out one more thing that struck me:
a FA was "unable to fall back asleep"?? Really? I don't have 1st hand knowledge but I would assume flight crews would almost be like military personnel - very used to sleeping at odd hours, and able to sleep when & where the opportunity arises.
She was so upset at having her door knocked on - that she couldn't fall back asleep over a 4 hr period?