Let her have her way...As a matter of fact, eliminate both mens and womens leagues and only have one league for everyone.
And we can take it a step further. How 'bout everyone wins, and gets a trophy....you know....like the kids now-a-days!
On a serious note, as a tournament and league tennis player, I would have no problem having a woman as my opponent. It's all about the competition. These guys need to grow a pair and recognize that they don't want to play her for fear of losing to a woman. If she truly is a 5.5, then she's pretty darn good. That is the level of most Division 1 college players. I also wonder how many of them would make flimsy excuses about playing someone like Jelena Dokic: