A/N: Prompt from an anon; Marley and Kitty spying on their sisters' date (Quinntana), with Marley and Santana as sisters and Kitty/Quinn as sisters. Thanks! (Also, thanks goes to pezberrykisses, who helped me with proofreading and the characters as I haven't seen any of season four. XD Thanks!)
It's Marley who first has the genius idea. Still, that doesn't mean anything when she actually goes to the Cheerio with it. "No," she snaps, crossing her arms as she glares at Kitty, "I don't care how much you think you've got this under control. It's my sister, too!"
"Just as much as it's my sister," Kitty snaps, rolling her eyes at the other girl. "Marley, chill. Just as long as they go out, right?"
Pushing her hair behind her ear, Marley finally acquiesces, nodding her head, gritting her teeth and smiling, "All I want is for her to happy."
"As I want Quinn to be happy." Rolling her eyes again, smirking, Kitty flutters her hand in the air. "Good thing they're both interested in each other, hmm?"
"Yeah." Glaring at Kitty's hand, Marley takes a deep breath, focusing once again on her forced smile, "Good thing."
"You call that 'appropriate dress'?" Kitty snarks, not taking her eyes from the front of her house. She and Marley are camped out in Marley's car across the street, shifted down in the seats, "I hate to tell you this – no, actually, I don't – but your sister's a slut."
"Only if your sister takes advantage of her," Marley hisses back. She's annoyed, and she's already been stuck in her car with the blonde for the past hour. Nothing Kitty's saying is making anything better.
Kitty snorts. "Yeah, that's not my sister."
"Then just be quiet about mine, okay?" Marley sighs, then raises her hands. "Look, just tell me when they're moving. I know where they're going, so we can wait a while before we follow."
"Breadstix. Of course."
"There's nothing wrong with Breadstix," Marley retorts.
Rolling her eyes for the umpteenth time, Kitty gives the other girl a humorless smile. "Did I say there was?" Crossing her arms, she settles back in her seat. "Just, Santana's not winning any points with taking Quinn here."
Marley almost whacks her head against the steering wheel. "Breadstix is one of the only romantic places to eat in Lima," she offers tightly, "And you know as well as I do that Quinn enjoys it."
"So?"
"So I'm just saying you can, maybe, please, lay off my sister a bit? Santana's not new to this dating thing."
"Exactly." Kitty huffs, running a hand over her hair, eyes glowing in the reflected light off of the restaurant, "So, you hungry or not?"
Marley falters. "Uhm, what?"
"Quinn and Santana are going to be too caught up in each other to notice if we sit across the restaurant from them. And I'm starving. So, you hungry or not?"
Studying Kitty, Marley slowly sits up. "Oh…Kay," she pushes on her seatbelt, "Fine. Yes, I could eat."
Kitty nods, almost impatiently. "Finally."