Check out: Kali Energy and Why is Kali Dancing? Read about Kali energy and also watch 'Why is Kali Dancing?'- it is a short video explaining why Kali is typically shown dancing with one foot on ground and another on Lord Shiva's seemingly lifeless body.
Hopefully this will help you contemplate on Ma's form so we can go beyond and connect better with her
Wishing everyone a Happy Navratri ahead...