Lena is a professional model and is a sadist.
This is her very first time trampling somebody. Lena is brutal for a first timer. She did not use anything for support and used all her weight, all the time.

She's wearing brand new Italian Identita heels. The heels are sharp like knives.

I added a short 2min clip at the end so you can see her full body and face. That final part has no audio.