She's definitely not Sri Lankan or Indian. There's a term that's used for people in that area (not a derogatory one) and when we were talking she mentioned it as "oh yeah where we are from" instead of using the term, it's called desi. If she was a desi herself even if born here, she would've referred herself as that.
But that doesn't mean that her service is crappy, so people aren't gonna get that authentic South Asian she claims to be.