Fear not, for the women of gaming exist....and the female enthusiasts of Castlevania, though rarer, will still be that diamond in the rough to seek out.
Guys will give me weird enough looks when they find out how much of a geek I am with my knowledge of gaming, particularly oldschool. I will say it's kind of funny as hell when they ask me about my Castlevania tattoo on my ankle, I explain what it is, and they get that look like they're a mixture of confused, intimidated, clueless, and the slightest bit curious. (more-so if they're a fellow gamer) The facial reactions I've gotten are priceless.
I'll never forget one time in college a guy wandered into our social group of geeks, trying to weasel in by spouting random gamer talk. He found out I was into Castlevania and, trying to be a hotshot, proceeded to try to insist that Richter was not playable in Symphony of the Night. When I corrected him, he asked me something along the lines of "Well, what makes you think you're right?", in a way that implied my knowledge of gaming was inferior because I was a girl. My friend who was sitting behind me proceeded to bust out laughing out loud right at the guy with a "Dude, you're out of your fucking league" connotation to it. I told him to go up to the computer lab and look up "The Castlevania Dungeon" and let me know what he found. He never returned.
It's those days I live for, as a female gamer. =)