This is a whole nother topic. All we should be worried about is fixing her immediate problem.
You did bring up the sex and muscular development issue in your initial post, so thats why it digressed off topic.
Fact is a superior technical girl will run circles around all but the most elite of men. Will she be div 1? Maybe not. Will she be able to beat most men and damn near all women? Hell yeah. Just steer her down the most technical path. Above all else, technical proficiency reigns. More than strength, stamina, flexibility, .. everything.