Continuity mistake: Right at the end when the man takes his mask off, a strand of blonde hair hangs out from the back of "his" head. In the next shot the hair is dark brown.
Continuity mistake: When Lionel Twain is leaving the dinner table, in one shot his left arm is up, but then down in the next.
Answer: I think she is a lady...remember at the end when he said she was the daughter of Lionel Twain.