If she really said "we are sat" rather than "we are sitting"
then I suppose it's not that surprising, but just another sad
reminder that for some reason the more grammatical "we are
sitting" seems to be falling into disuse. I inwardly wince
every time I hear someone on radio or TV say "I was sat" or "I
was stood", which means that I wince an awful lot.
Sorry for the rant, but it's a particular bugbear of mine.
John Hall

I agree 100%. I too do a lot of wincing these days. Also when
'lay' and 'lie' are misused.

Anne