Eep, I don't know...
I watched the clip. I don't watch Sunrise so don't have the benefit of 'getting her' personality and humour, but I wouldn't say that's obvious sarcasm.
I don't for a second think she is a racist person, but that comment did not come across well at all.
The best I can come up with was that she was maybe trying to make her sound special too, as the description of the other twin arguably sounded more exotic and interesting?