John Marshall , one of the excavators at Mohenjo-daro , described her as a vivid impression of the young ... girl , her hand on her hip in a half-impudent posture , and legs slightly forward as she beats time to the music with her legs and feet . John Marshall , one of the excavators at Mohenjo-daro , described her as a young ... girl , her hand on her hip in a half-impudent posture , and legs slightly forward as she beats time to the music with her legs and feet .