Indeed, what is important how she moved during the dance--that despite being a weak woman, she forgot her shyness and threw herself into the Sarugaku dance, half-naked, breasts exposed, using her heels to pound out the steps onto the ground while bending her heels towards her inner thighs and twisting her toes to face out.
むしろ手弱女であるが、恥じらいをかなぐり捨て乳房を出して半裸となり、踵を股の内側に、つま先を外側にひねって地を踵で強く踏む申楽のステップをする動作が重要である。