why are european girls nicer than american women?

i know a female scottish bartender and she is very polite and rarely ever uses foul language and says sorry when she does. She works hard and never complains about it either. She is very welcoming to people and doesn't look down on anyone. She told me I'm the nicest guy in the bar and thanks me for helping her. She's very commited to her schoolwork and we help each other out (im in college too) 

\She's like the polar opposite of the women who come in and are very rude to the bartenders and do not care about anything other that getting drunk and laid. Are european women taught better manners than american women?