Big Drawls Defender here;
She pushed the back of Jade's neck...so unless you think she's the strongest woman in WWE history, that wasn't her "brute strength."
It's not like she grab her from her waist and throw her over her head into the steel steps.
She didn grab her hand then smash it on the stairs.
She shoved her head and Jade went flying. They damn near by the table by the time Nia starts guiding her to the steel steps.
Jade jumped into the stairs. She went TWO (2.5) Steps from the other side of the announce table. She oversold.
Nia ain't even grabbing her wig..she's cupping the back of her neck. Jade had control over her body, she fling herself into the steps.
Again, check her feet.
Nia's body weight was towards the ring (hell, she's leaning on the ring the other way) while pushing her neck with one hand. It's simple physics.