Yeah, there's this Chinese girl in my dorm. She said her name's Sarah - I don't know what her REAL name is, though.
Are you saying Chinese people can't be given English sounding names?
Yeah they always have a real name and an American name.
You shouldn't assume that Sarah has another name just because she's Asian. Sarah is her real name even if she has another name. It would be like saying my middle name isn't my real name.
I'm not trying to be mean. This is just the way it really is.
Some immigrants do use a name that is easier for American's to pronounce, but it's still their real name. She would probably be hurt to hear that you don't consider Sarah to be her real name.