Standing on the Doorestep → Masturbating on Doorstep

...I'm not sure how to proceed. I'm stuck in two halves. The first wants to get to making his sexy pet goth-mom even sexier, the second wants to focus on making her more motherly. I focus on the phrase 'standing on the doorstep,' and consider what I might change. In a flash of heat, the first thought to come to mind is how sexy it'd be if she were 'masturbating' instead of just standing there and---

---Mom's giving me, ahem, the camera an absolutely smoky expression of want and need as she kneels on the entry rug, pushing her breasts up with her arms as her hands rub along the rug and pull at the bottom of her dress.

Her face is flush with lust and desire, and her clothes look sexier than a moment ago too. Part of me's pleased to see she's even acquired a leash somewhere, which seems to be pulled between her breasts by something. I can't quite see what's going on between her legs, and I've mixed feelings about that, but...

...There's definitely something going on: Women don't get that worked up without a source of pleasure somewhere, right? A lot of me just wants to go join in and help my sexy "pet" play with her "toys." But an equal part is still reeling, trying to come up with a way to counteract this.

Natural as it feels to watch my Mom squat by the front door and writhe in pleasure, it's not. It can't be... right?

(goth girl, eager pet, hourglass mom bod build, long purple hair, tidy ponytail, squatting on all fours like a dog, long dress, mom clothes, dog collar, masturbating on doorstep)