Is whether or not I was as pertinent as whether or not I might have been - because I may have been.
You might also ask (as the proper counterpart to your advocacy for using "women") whether I might have been had it been presented as an activity for men. Probably not, because I didn't identify as a man when I was a boy.
All I'm saying is that there's no reason to be hypersensitive about using the word "girls" if your target audience actually includes them. Is there a reason to believe that they were using the word "girls" but excessively trying to appeal to women? I took the unicorn and the kitty as a dead giveaway, myself.