A/N- This one's bringing up the hotness level by a bit. Let me know how it is. :)
Sansa and Margaery had been together for 2 years when Margaery brought the Stark home with her for part of summer break. They had visited Margaery's hometown together, but now they would be staying in High Garden for a full week before returning to Kings Landing where they both had internships prior to their final year of college.
Sansa had met the Tyrells before, so she wasn't concerned about making a good impression, but she couldn't deny that Olenna Tyrell still scared the shit out of her.
When Margaery pulled the car to a stop beside Loras's (completely unreasonable and entirely overpriced) convertible, the whole Tyrell clan streamed out of the house to greet them. Loras lead the pack, sweeping his little sister into a hug before she even had two feet on solid ground. Margaery was passed like a rag doll from brother to brother, even Wilas with his cane lifted Margaery off the ground when he embraced her. Granted the Stark siblings were very excitable and reunions were always loud and full of bone crushing hugs, Sansa had never seen a welcome quite like that of the Tyrells.
When the boys were done with their sister, they turned on her, "Sansa!" Loras exclaimed, moving to envelop her in a warm hug as well. She smiled and returned the hug, moving through the line of Tyrell boys until she found herself in front of Margaery.
The brunette smirked and pulled her girlfriend into a hug, "Hello, darling." Sansa chuckled, but hugged her back, pressing a kiss to Margaery's neck, "Ready?"
"Always." Sansa confirmed, squeezing her girl once more before letting her go. Loras and Garlan insisted on bringing in their bags for them, and the girls were ushered into the Tyrell family home (mansion).
Everything went swimmingly the first day. Margaery took Sansa into town, and they walked hand in hand down the cute main street, exploring small boutique shops, getting ice cream at Margaery's favorite place. That evening the whole family plus Renly and Leonette settled in for dinner around the large dining room table. Willas and Garlan no longer lived at the family home, but had come to visit for a few days while Margaery and Loras would be on school break.
Sansa found herself seated between Margaery and Loras, Olenna and Mace at either head of the table. Dinner started off as any other, Olenna asking the girls about their studies, Willas and Garlan teasing Loras good naturedly, Mace trying to keep peace between the kids.
Eventually Olenna turned to her favorite past time, making the in-laws squirm. She started off easy with Leonnette. She had actually married Garlan a few years prior, and the two were expecting their first child in four months time. Olenna's prodding was nothing serious, just some leading questions about their preparations for the baby, and Leonette, bless her, was so used to the Tyrell matriarch's bluntness that it rolled right off her back.
Renly was up next. Last time Sansa and Margaery had been down to High Garden, they watched Olenna tear Renly to shreds because he was temporarily unemployed after finishing law school. Now the man was part of the prestigious Lannister Firm, and on his way to getting a promotion to junior partner. He was mildly shaken by Olenna, but he held up notably better than last time.
Before she really had a chance to prepare, it was Sansa's turn in the hot seat, "So what are you studying again, dear?" Olenna asked, her voice curious and probing.
"I'm an english major." Sansa replied, doing her very best to maintain eye contact with the intense older woman, knowing it was best to try and pretend to be confident.
"What exactly do you plan on doing with that?"
"I'm also an education minor so I figure I will become an english teacher."
"Not much money in education, is there?" Olenna remarked.
Sansa flushed, and Margaery laid a comforting hand on her girlfriend's knee, "Sansa's a wonderful writer, she could become a novelist if she wanted." The redhead blushed more under the praise.
"Difficult market to get into, writing." Olenna looked down her nose at the girl, a particularly impressive feat given that Olenna was significantly shorter than Sansa, even seated.
Sansa had no reply. Her voice was stolen further as the hand Margaery had put on her knee in comfort began sliding upwards.
Sansa squeaked, earning odd looks from everyone at the table she covered poorly with a weak cough. One of her own hands dropped to her lap to grab Margaery's and stop the girl from moving it further. Margaery was not deterred, "Don't you like the chicken, darling?" Margaery asked, pointedly eyeing the meat on Sansa's plate that she would definitely need both hands to cut.
"It's great." Sansa ground out, doing her best to give Margaery a warning without drawing attention to the two of them. Reluctantly she released Margaery's hand and picked up her knife.
"Where are you from again, dear?" Olenna asked.
"Winterfell." Sansa's voice was impressively even given that at that point Margaery's hand had slid all the way beneath Sansa's skirt and her pinky was residing at the bottom edge of her underwear.
"Which is in?"
"Minnesota." Sansa replied shortly. Gritting her teeth together against whatever ungodly noise threatened to escape her mouth as Margaery's hand boldy slid to her center. Her middle finger went straight between Sansa's legs, stroking her folds through the material of her underwear.
Sansa would get her back for this later.
"Rather cold up there, isn't it?"
"I suppose, but I loved growing up with the snow." Sansa agreed. She clenched her legs together in an attempt to remove Margaery's hand, but all she succeeded in doing was pressing her fingers more tightly against her core. She couldn't help it, she let out a low whimper.
Loras turned to her in concern, and Sansa had never in her life been more thankful for table cloths, "Bit my tongue." She lied unconvincingly.
Loras looked between a blushing Sansa and a smirking Margaery and shook his head.
With that, Olenna seemed to let Sansa off the hook for the evening, instead turning to Margaery to ask about her past semester. The brunette answered without missing a beat while her fingers continued on in their ministrations, finding Sansa's clit with remarkable skill.
Finally with the attention moved away from them, Sansa dropped a hand to her lap and grabbed Margaery's wrist, drawing it away from between her legs. Margaery did not put up a fight, and merely smirked wider to herself. She brought the fingers that she had been tormenting Sansa with to her lips and casually sucked them into her mouth.
Sansa was lucky she was still upright. Loras rolled his eyes at his sister's antics, and the rest of the table was blissfully ignorant.
That evening when they curled up in Margaery's small twin bed, Sansa teased her girlfriend within moments of orgasm and stopped. She withdrew her fingers and pulled her tongue away, a devious smile gracing her features as she crawled back up Margaery's body.
"Why did you stop?" Margaery asked, breathless. Her eyes were blown wide with arousal, and her hips jumped desperately up, chasing any sort of contact with Sansa.
"You teased me all through dinner, I figured it was only fair I returned the favor."
"Funny." Margaery deadpanned, "I'm so close, Sansa, please?"
Sansa pretended to think it over, enjoying the way Margaery was squirming beneath her, "Hmm, no. I don't think I will."
"Babe!"
"What?" Sansa played dumb.
"I'm going to explode." Margaery complained, rolling her hips up, trying to entice her girlfriend, "I'm sorry for dinner, I promise I won't do it again."
"You promise?"
"I do."
"What are you doing to do to make it up to me?"
Margaery harrumphed. She was the one who had introduced coercing favors in exchange for sex, and Sansa had taken off with it, "I'll do the dishes for a full month."
"And?" Sansa pressed.
"And I'll answer the door whenever the old woman from down the hall knocks since she always talks for at least forty five minutes."
"And?" Sansa tried, just wanting to see how much she could get out of the desperate brunette.
"And I'll go down on you for a full hour." Margaery said with the finality of playing a trump card.
"That just seems unpleasant." Sansa winced thinking about how sensitive she normally was after Margaery went down on her normally.
"Not the way I'd do it, darling." Margaery smirked.
"Swear?"
"Yes! Please, baby."
It wasn't often that Sansa was able to reduce her girlfriend to a trembling mess, and she fully intended to enjoy it, "What do you need?"
"You." Margaery immediately answered.
"You already have me, you're going to have to be more specific."
Margaery shot the girl her best glare, but under current circumstances it wasn't very effective, "I need your tongue back on me, and your fingers inside. God, please Sansa."
The way Margaery said her name when they were having sex absolutely melted the redhead. She pressed a chaste kiss to Margaery's lips before crawling back down her body to finish her off.
Afterwards while they cuddled together, catching their breath, Sansa nosed her way into her girlfriend's neck, breathing deeply in the warm soft skin, "Your brother definitely knows what you were doing at dinner."
Margaery thought for a moment, "Which one?"
"Loras."
The brunette laughed, "Consider it divine retribution for all the times I've walked in on him and Renly."
A/N- Olenna definitely knew. Margaery is kinky as shit and gives no shits