First, sorry, not female, though I may point my girlfriend here and see if she wants to answer for herself.
So, Who are you? Where do you live(country/state)? How old are you? What other interests do you have? Do you identify with any particular subcultures? What kind of music and styles are you int? Are you single, married or divorced? How much money do you make a year/ how much does your family make(if they buy your games)? Whats your educational background? Do you buy your games or does someone else. Do you borrow/rent/pirate the games you play?
This bit doesn't matter too much about your female audience, the socioeconomic data you can take from here is applicable far more to anyone in a similar socioeconomic situation with similar priorities than it is to crossing the male/female divide which exists less and less substantially as time goes on. The subculture identification I applaud as that will change both the games a person is seeking and the ideology behind why. Educational background may or not play a part, simply having a college education does not transcend the desire to play simple games like beat-em-ups. You appear to be attempting to qualitatively assess the entire gamut of regularly gathered social data and build a profile of a quintessential female gamer. I think this is a bad move. You're never going to be able to get all the information you need for a website based on this kind of information.
As has already been said, female gamers are people too and people like simple websites. Having watched my girlfriend design websites, keep things simple, clean and without too many clicks. This applies to everyone though, so it's not particularly useful. Possibly use a colour palette with colours which blend well together, if you're doing design you know what does and doesn't work with other colours on a colour wheel. Don't use an overly feminine layout or borders, but do use warm, comforting colours like pastels rather than solid, dark colours in places as this is associated as being more comforting to more feminine people. Which doesn't mean it's more comforting to many female gamers as they don't necessarily see themselves as feminine and this is where you hit the wall. The only real difference between male and female gamers I've seen is female gamers being more willing to cope with multiple viewpoints and discussion and generally liking the ability to not have to put up with a conversation that amounts to epeen measurement or degenerates into "ur a n00b for think this thing". You need to encourage discourse and the representations of more than simply post counts sites like the Escapist have are a good marker for things like that. Allow people to discuss the reviews and allow people the opportunity to discuss various issues as in any other forum.
Do you consider yourself a hardcore gamer, casual, or are you just beginning to nurture your budding interests in games. How good is your computer and how often do you go online? What genres of games do you like? What are some of your favorite games? Do you like retro games/ cutting edge games/ flash games/ simple ad games/ forum games?
Now this is good stuff, I can see the relevance here and this is really where you should have started. In here is the information you actually need to build the site and the design sensibilities should be as I've said above designed to be simple, welcoming and feature relatively high levels of moderation in discussions and the ability to report idiots.
If a site were to be made for you: the female gamer, how would you like it to look, what kinds of features would you like it to have, would you like complex navigation or would you like it simple and to the point?
I don't think anyone likes complex navigation. I know females are alleged to think on more complex levels, but in reality this often means they prefer more simplistic interfaces so they can continue to do more things at once.
If you don't feel confortable answering some questions posed that's perfectly fine, any information I can get would be helpful. I'm not interested in how males really feel about girl gamers so, guys, if you could keep that to a minimum. However if you have girlfriends/female friends that are into this stuff, I'd like to hear from them too.
While I know I ignored the actual comment here, I'm hopefully giving you some useful things to think about. I think I understand what you're trying to do with providing a website for something you see as expanding, but not being discussed well, but the honest answer is female gamers who identify as such and would do so to the degree they sign up to forums like this are just like the male gamers when it comes to site design, gamers first, everything else second. That means they appreciate simple design, good layout and the ability to do what they want to within the design philosophy of the site.