Our conductor on the train to Chicago was female, but with a very short haircut. She was incredibly friendly and helpful and kept coming back to talk to us. And, every single time, Bella would say to her, "You're not a boy, you're a girl. A girl! You're a doctor? [conductor] Where is that other doctor? I want that other doctor."
Luckily, the woman never understood her. She just kept smiling and nodding and responding happily to Bella's rants.