She should dance more and cycle less. But to realy x-train she should study a variety of dancing. Jaz, African, Celtic, hip hop... ok no not hip hop, Belly dancing, East Indian, etc. That will bring so much to her game. Seriously. Cycling will do next to nothing for her if she puts cycling time into dance time instead.
Cycling is a good x-training tool for other things like hockey, figure skateing, x-country skiing, swimming, downhill skiing...