What’s the occupation of Mr. Brown’s wife?

W: Excuse me, but aren’t you Mr. Robert Brown from England?
M: Yes, I am Robert Brown.
W: I’m Wang Yan from Capital Normal University. I am here to meet you. How do you do?
M: How do you do? I would like to introduce my family to you. This is Gatherine, my wife, she is a doctor. This is Henry, my son, eleven years old. And this is Linda, my daughter, six years old.
W: Hello! Welcome to China. Did you have a pleasant journey?
M: Yes! We did. But we feel a little bit tired after the seventeen-hour flight.
W: Don’t worry. I’ll take you to your hotel. This way, please! The car is waiting over there.