I dunno, that's an extremely aggressive letter and asking her to respond over the weekend? Your report of the earlier conversation seemed promising, but you're immediately treating her like a hostile witness from the start, when there are so many facets of this issue, it may take her weeks to catch up if she is sincerely unaware of the issue. Maybe I'm missing something.

Regardless, HUGE props to Steve for chasing this person down, being the FIRST person even to contact the Federal Air Surgeon (a position I didn't even know existed).