That’s not exactly a fag hag. These girls are simply friends with gay men. A fag hag is something completely different.
To me a fag hag is a not just a girl who has gay friends. She is a girl who thinks guys having sex together is hot and prefers all her male friends to be gay (and, if not, encourages them to be so). She is a girl who may have female friends, but it’s only gay men who truly understand her. She is a strident advocate of the homo-culture and does everything she can do make the world more “homo-friendly” and is quite in-your-face about it. She adores surrounding herself with good-looking, well-dressed men who party, all the while secretly hoping she will be the one and only woman who can “convert” him.
This was my experience with fag-hags in college, but words change so frequently it may mean a totally different thing today.