When Ellie heard the sound of the door to her bedroom opening she kept her head down like the obedient sex slave she had become.
As with every other time it happened she briefly worried it was someone other than her mistress. Chuck, or Morgan, or Casey would all be horrifying, and while if it was her husband Devon she could probably convince him she was waiting naked for him, explaining away her being on her knees as getting up from some kind of exercise and she was simply wearing a butt plug to help prepare her to eventually take his big dick up her ass, but that would mean she wouldn't get to please her mistress, something which was more important today than any other.
Thankfully the door was softly closed and locked, whoever it was obviously unsurprised to see Ellie on her knees without a stitch of clothing on. Shortly after that a pair of long beautiful legs strolled up to her, Ellie swearing she had been given the honour of kissing those high heels before.
Finally hand slid into her hair and stroked it affectionately, an extremely familiar voice murmuring, "Hello Ellie, are you ready to submit to me?"
"Yes Mistress Sarah, I want to be yours completely." Ellie replied quickly and truthfully.
Sarah smiled, "Lift your head up."
Once her pet had obeyed Sarah slowly stepped forward, positioning herself so that her crotch was pressed directly against Ellie's face.
As was always the case Sarah became increasingly aroused as her time with Ellie grew closer so she had no doubt the woman could smell her excitement through her clothes. Hell, Sarah felt like she could smell it herself.
After allowing Ellie to smell her arousal for a few long seconds Sarah asked, "Is this what you want Ellie?"
"God yes Mistress Sarah, more than anything." Ellie quickly replied.
"And what exactly is it that you want?" Sarah pushed.
"Your pussy Mistress Sarah, I want to eat your pussy." Ellie confessed, happily elaborating as she looked up into the eyes of the woman she was so desperate to please, "I want to bury my face in your womanhood and worship you like the goddess you are. To lick you, to suck you, to fuck you with my unworthy tongue like the cunt starving lesbian you have turned me into. For you to cum in my whore mouth. I, I just want to please you Mistress. To be your personal pussy licker. A mouth and tongue for you to use for your pleasure. That's what I want. Please give it to me. Please? I want it so bad. Please Mistress Sarah, let me eat your beautiful pussy."
Sarah beamed with pride. Ellie had become such a good pet, so wonderfully eager to please her mistress and embrace her new role as Sarah's bitch. And God knows those submissive little words made Sarah want to pull down her short skirt and panties, tighten her grip on these beautiful brown locks and shove Ellie's face as deep as it would go into her dripping cunt. However a good Dom knew when to show restraint, and now was one of those times.
"I may give you that privilege, if you really want it." Sarah said softly.
"I do Mistress." Ellie said quickly, "I want to eat your pussy."
"Then you must first earn it." Sarah said firmly, moving over to the bed, sitting down on it and then patting her lap, "This time we shall begin with a spanking."
"As you wish Mistress Sarah." Ellie said softly, crawling over on her hands and knees with her head down, quick to place herself over her owner's knee once she reached her destination.
"Good girl." Sarah murmured softly, taking a moment to admire the ass she had become so obsessed with spanking and fucking. Immediately her eyes were drawn in between those full cheeks, a smile crossing Sarah's face as she saw something that was expected but nevertheless welcome and worthy of slight praise, even if it was only in the form of an acknowledgement, "I see you remembered to wear your butt plug."
"Of course Mistress Sarah, my ass needs to be loose and ready to take whatever you want to give it at a moments notice." Ellie said softly as she felt her butt cheeks being gently pulled apart so that her mistress could get a better look at her plug filled ass hole, "And I hope you will take the time to use it for your pleasure. You know how much I love being your nasty little anal slut, don't you Mistress?"
"That I do." Sarah agreed, before giving Ellie's ass a hard smack, "But do not try and manipulate me into giving you what you want slut! I'm the Mistress here."
"Yes Mistress, absolutely Mistress, I wouldn't dream of undermining your authority Mistress." Ellie quickly insisted before adding, "I was just trying to please you Mistress Sarah, I swear, but if you want to spank me longer and harder for my insolence so be it. Or don't. The decision is yours. Always yours. I am nothing but your unworthy slut."
Sarah smiled. Ellie had learned her lessons well, embracing her submissive side and becoming a perfect little sub. Or at least perfect once her training was complete. First though Sarah would remind Ellie who was the mistress and who was the bitch in the easiest way possible.
"Yes, you are nothing but my unworthy slut. My bitch. Now shut up and take your spanking." Sarah ordered as she raised her hand, bringing it down on the final word and then quickly repeating the process.
As Ellie had been a good bitch Sarah kept the spanking reasonably gentle, using enough force so that the brunette would definitely feel it while using just over half the strength she was capable of. Ellie's firm little ass cheeks still jiggled hypnotically and very slowly turned first a light then a dark shade of pink under the assault, but Sarah stopped long before they reached the crimson red she had occasionally beaten Ellie's ass too.
Considering the number of spankings she had given her slave Sarah was confident Ellie would know the difference and be grateful for it. More importantly she would understand that this was what she got when she was good. A small amount of pain followed by a large amount of pleasure, as opposed to a large amount of both. Constant reminders of that helped keep a sub happy and well trained, two things Ellie was proving very much to be.
Of course the quick, gentle spanking was not just for Ellie's benefit. At least not for her physical benefit. After all people wandered into this home at seemingly all hours of the day so spanking Ellie here at any time, no matter how sure Sarah was that no one was going to be here, was an incredible risk. Hell, doing anything here was a risk, but that did give it a certain extra flair. Besides, Sarah deeply wanted to fuck Ellie in the bed which the brunette doctor shared with her husband. Not only would it be a total rush but it would help solidify Sarah's dominance over Ellie, something the blonde spy was determined to do.
Ellie was all for helping her mistress solidify her dominance over her. In fact there wasn't anything she wouldn't do to make that happen, and receiving spanking seemed like such a trivial thing now compared to the debauchery she had submitted too. After all this was the woman who owned her ass, Ellie submitting her forbidden hole to this dominant blonde and allowing her to use it as a fuck hole whenever she wanted. And Ellie's actual fuck hole, the one she was supposed to save for her husband, was also Sarah's to do with as she pleased. As was Ellie's mouth. Or at least it soon would be.
As Ellie was eager to complete her submission to Sarah she was glad the spanking turned out to be brief, although there was a twisted part of her which wished the blonde had been harder on her. That her mistress had beaten her ass so red she wouldn't be able to sit down for hours, something Ellie was becoming used to thanks to the constant spankings and ass fuckings she was taking an emotionally she loved it. She loved it when her ass hurt because it was a testament to Sarah's dominance over her.
At the same time the sensible part of Ellie was very grateful the spanking was brief and gentle as with every blow her ass hole and anal walls clamped down around the butt plug stretching them open. It was a sharp, painful sensation which in some ways felt worse than the blows to her butt which was easily ten times worse when the spanking was hard. And truthfully when it ended Ellie didn't even think about begging for more. Not when what came next was her final submission to her mistress.