I personally believe that a girl can give good solid advice on how to get other girls but it's so rare its like finding a unicorn.
I actually have a close girl friend who's a senior at my college who is actually very very good with game. I met her through one of my girl friends, and we actually connected and started our friendship by talking about social dynamics and how to pick up girls (She actually used the word "Social dynamics" and it shocked me)
She's an awesome Pivot girl, and is very good at club game and the techniques to build attraction. She's actually way better than me at Club game. She's like the perfect wing-woman and loves to help me because she finds it fun. She doesn't use PUA Jargon, but we always have talks about how to build attraction and the varying techniques to go about it, How to be a challenge, we talk about how to open girls or guys and how she would go about it. Talk about text "game" and how to send texts that spark interest, etc.
The only difference is she tells me how she goes about "gameing" guys and her techniques as well. It's so interesting to hear how she goes about getting guys" She once told me that she was never "gameing" less than 5 guys at a time all through out college, lol, crazy.
She's very pretty, and she's the only girl I've ever really met that knew as much as she does about how girls "really" work. She's in a relationship now so she's slowing down, but I actually value her advice when it comes to girls in some instances as much as I would the people on this site.
I also am a firm believer in never taking advice from a woman, just felt like throwing this out there.