Shouldn't that be "No, she is?" Because if "Yes", than you agree with the statement. E.G. Q: Isn't she Danish? A1: Yes, she is Peruvian. A2: No, she is.
Four Times Too Many... Suzie and Ann were having coffee together and Ann was depressed. "What's wrong?" Suzie asked. "I was married four times in five years and every one of my husbands passed away," replied Ann. Suzie asked, "What did they do for a living?" "Well, said Ann, my first husband was a millionaire, the second was an actor, the third was an evangelist, and the fourth was a mortician." Suzie, with a sly grin said, "Oh, I see, one for the money, two for the show, three to get ready, and four to go..."