This was pretty good and also true. I can't say that I exactly transitioned into gaming (the first "video game" I ever played was Prince of Persia when I was five years old on an old Mac. Nice and bloody game for a five year old.) Even so, a lot of what you said was true for me.
I used to be a lot like other girls where I just judged the game by it's cover (marketing) and quickly dismissed it because of a scantily clad lady on the cover. I don't do that as much anymore, I actually read reviews about games, and look for games with good gameplay, story, music, etc.
The whole slutty girl thing has gotten a liiiittle better. Not by much, but it was nice in Portal to play a female character who didn't have her boobs hanging out.
Also, you totally hit the mark on the whole thing about girl gamers not being able to talk to their friends about video games. Trying to talk to my female friends about games always ends up being really awkward. They try to look interested, but usually I can tell they really aren't and are just going along with it for my amusement. The only people I can really talk to games about are my guy friends and all you internet people.
As far as the ratio of male to female gamers...well look at this thread. How many females have posted so far? ....yeah. However, I won't lie, it was kind of fun to be one of the three girls at MAGfest last year.
Can't wait to see your next one! Keep doing these, they're awesome.