Thanks for your constructive replies. I've goggled it myself. When she was five, she was slashed in the face by a stranger. So the correct response would have been "Yes. She is the scarred bird." Then I'd have said "Cool. Yeah, she's pretty fit" and that would have been the end of it.
But if you'd originally said "When she was five, she was slashed in the face by a stranger" I'd have said "oh I didn't know that" and THAT would've been the end of it.
My apologies. I get her confused with Leslie Mann and thought that the scar thing was common knowledge. What with it being on her face n'all.