A girl who has respect for female etiquette. A girl who is not petty and strives to be ethical and decent in her dealings with her female friends.
Marie: Ashley just broke up with Josh, you should totally go for it!
Megan: Nuh-uh! Josh is totally off limits!
Marie: But you've been crushing on him for months.
Megan: So what? Ashley and I are friends. I'd totally be shitting on girl etiquette to go after her ex.
Marie: Wow Megan, you're a real girl's girl.