I've noticed in my attempts when i ask digen to do something that doesn't make logical sense it brainfarts, so in this example, its struggling to see how a ball could make the woman's cloths just fall off, the devil is in the detail. Id write in the prompt something like ' the red ball comes back into camera shot from the left, it hits her chest, her breasts jiggle as her shirt rips open, the buttons pop off and shirt falls off exposing her bare breasts (insert description of how you want the nipples/areolas to look, breast size) her trousers/jeans are loose and the impact of the ball makes them fall down to her ankles, revealing her bare vagina. (Don't go to heavy in the description in how the vagina looks, it'll ether look like a shotgun wound or more hair than Chewbacca's ring piece. Write something like 'her vagina has a small amount of pubic hair which matches her hair tone'
Hope this helped.