Too reliant on GPS?
-- Note the "lighter than usual" traffic.... I'd question the "usual" 10 to 20 minutes... I think that sounds like baloney.... PS, I have no idea of the true travel time, but that one google maps seems to make it unlikely to EVER take 10 minutes.... unless you are in a helicopter maybe...
As someone else said, probably pissed that someone had cancelled on her.
very angry or annoyed.