I think she was offended by the triviality, in her eyes, of the request.
I think of two events:
An acquaintance on stage responding sharply to a comment from the audience - "Some of us do this to keep a roof over our heads and put food on the table for our wives and children".
Someone signing on as one of the roaming musicians for the London Olympics in 2012 being asked "What do you do for a living?", answering "I'm a musician" and getting the response "I know that, but I want to know what do you do for a living". Twice.
Sometimes one despairs.