I just read an exciting post on Pinkbike.com. Whistler Mountain Bike Park is hosting the first Boneyard Air Affair slopestyle contest on June 14-15, and there's a women's category.
Lots of slopestyle comps don't split up classes or designate men's and women's rankings. The other cool thing about this contest is that judges will assess your riding at Saturday's practice and let you know whether or not they think you're ready to compete.
While it may be a bummer to get booted, you'll actually have the opportunity to get your entry fee refunded. That means that no one has a thing to lose by entering the contest. You'll get lots of experience on Saturday and a chance to show off those skills on Sunday. Get on it, ladies!