Thanks for so many cool stories about Joan! You are some fortunate people.
As far as hitting the "high notes", I'm not so sure that even Joan can quite do that anymore. After 50 some years, even the best voices have a toll taken. That said, her charm and loving ways seem to only get better with age.
She is truly a person I would name on one of those "who would you like to meet/converse with" polls.