Kastra decided that she automatically liked the girl for ignorance. Under normal circumstances, she most likely would have been offended at not being recognized, as she did happen to be a rather important person, but a reprieve from being under scrutiny was welcomed.
She was half-tempted to give a different name, just to preserve that sense of anonymity she so rarely felt. But that would be foolish, of course.
"Kastra Dumbledore," Kastra replied with a slight smile. "I'm afraid I don't remember your name, either."