I'll admit, I am a little offended by the OP referring to his friend's GF as a "valley girl". does she say OHMYGAWD!!!! all the time? Are her mannerisms like Alicia Silverstone in Clueless? Was she a teenager in the 80's living in Reseda? Then, no, she is not a valley girl. Just because she is from that part of southern california doesn't make her a valley girl. wine and cheese plates have NOTHING to do with being a valley girl. There is BBQ, whiskey, and loud talking in SoCal also. the OP also mentioned never actually meeting her yet, so????? he's getting this interpretation from his friend?? Okay, then the best way to find out what might make her comfortable in the South would be asking the friend what she likes/dislikes. What are her favorite drinks/foods?
Alicia Silverstone voice, twirling her long blond hair and rolling her eyes:
Dude, maybe the GF has drinking/eating habits/mannerisms that are more predominant in SoCal than in the South, but calling someone a valley girl is a pejorative, OHMYGAWD! For sure!!