Yes

For some fun with her, you also ramp Heather's arousal and make her very horny, and make her extremely attracted to you so she will willingly do anything you tell her just to get fucked by you. With that done, you decide to give your changes a little test drive by fucking the spoiled brat.

"Get on all fours, slut. Dogs don't deserve to walk", you tell her, and she quickly does it despite the obviously offended and humiliated look on her face, though there is also growing amounts of arousal clear on her face and body.

"I-I don't know why I'm feeling like this or doing what you tell me, but when daddy find out he will fire your sorry ass", she tries to angrily retort, though her angry tone start to flatter as humiliated redness overtakes her face.

"Yeah, I'm sure he will, Heathy. Anyways, a dog shouldn't wear clothes, so make sure you strip completely, and when you are done, walk on all fours over to me and whimper. And don't talk unless you are addressed", you order her, using a nickname you know she absolutely hates. She tries to angrily retort again, but instead finds herself stripping her red blouse and black bra to reveal some fairly nice breasts that let you see her hardened nipples, followed by her heels and grey skirt, which reveals a dark blue thing underneath, which she also quickly takes off, fully giving you a view of her naked body, which is fairly good, as well as giving you a view of her wet pussy.

With that done, she gets back on all fours and begins walking towards you like that, her ass swaying behind her and her tits hanging beneath her as she does, struggling to maintain any notion of dignity and not fall to the ground. Once she reaches your feet, she starts to whimper, sounding like a dog. With a smirk, you give her more orders.

"Good girl, now turn over and show me your ass", you tell her, and she quickly follows the orders; before long you have Heather's ass right before you. Without waiting any longer, you give her a few quick spanks while adding something to her main that will make it so getting spanked will make her ever hornier. The effects are almost immediate, and while she turns her head in clear outrage at what you did, the arousal on her face detracts from her anger.

You continue spanking her for a while before you finally deciding to fuck her, taking your pants off to reveal you awaiting erection. You quickly take aim for her pussy, which by now is soaking wet. You reach her entrance and slowly tease her before you push in, feeling her tightness.

By the looks of things, this was mostly a tease, and barely ever had sex, which fit in with her being a bitchy, spoiled and uppity brat. At any rate, it should be a good experience to fuck the shit out of her and demean her while you're at it.