Here are three pictures that do it for me.
Is she anticipating or rubbing the sting out?
I think she is having a bit of difficulty entering the final stage of submission. She has her panties almost, but not quite, down. I’ll wager she will take some time to bend over. That’s an action that many women find difficult to do. Bending over is different from the comfort of closeness and being held OTK.
An most elegant spanking bench. I like that her heels are raised.