Something to humiliate her

"Good, I wouldn't dream of making you do anything illegal, now come kneel at my feet" Roulette's grin is not a pleasant one as she walks the few steps over to a big chair by the wall that looks like someone tried to make a throne without wanting to admit to making a throne.

Supergirl walks after her to the chair, but stays standing and erect "What is it you want?"

"It's really quite simple, these heels are killing me." She sits down and pulls of her high heels, then leaning back in her throne "And I'd bet that with your super senses, and years of practice controlling your strength on earth, you'll be able to give my feet better treatment than any of these pets ever could, so come along, this instep won't knead itself"

Her face turns slowly red as her mouth drops open in shock "A foot massage, that's what all this leads up to?"

"I'm hearing a lot of yapping, and not seeing a lot of kneeling. So get on your knees and start making me feel good Supergirl"

"You can be really annoying, you know that?" Supergirl lifts both legs leaving her floating in a kneeling position, before slowly sinking to the floor in front of Roulette's feet 'Ok Kara, you can do this, you've done it for plenty of people, heck, you even did it for Miss Grant on several occasions'

"Yes, I know I got nice legs, but stop staring at them and get to it" Roulette lifts her foot up, almost but not quite kicking Supergirl in the chests "Oh, I missed, I guess you're less developed than I first thought"

Grabbing the foot that's lifted, Supergirl ignores Roulette's taunting and starts carefully working her feet, sliding her hands over and around it and kneading any spot that she deems in need of some work 'People who can't fly shouldn't wear heels like this, these feet must've been killing her, it's just like with Miss Grant when she'd had one of her more walk-intensive days, or after that galla'. She's gotten lost in the task for several minutes when a soft moan from the woman in the chair makes her look up, breaking her thoughts of Miss Grant when she instead sees Roulette's face with heavy lidded eyes and the most unguarded look she's ever seen on her. 'She looks so young and relaxed, I wonder what led to her running criminal enterprises'.

Roulette opens her eyes at the cessation of the best foot massage she's ever had, and finds Supergirl kneeling at her feet, with her right foot cradled in her hands while she's starting up at her with a faraway look. She's tempted to say something scathing, but decides to hold off, and instead pulls back her foot and lifts the left one "That was very good Supergirl, please continue"

As Supergirl continues her ministrations, Roulette leans back in the chair and closes her eyes, just enjoying the sensation, and the warm feeling she gets at knowing the hidden optical fibers are capturing every second of Supergirl debasing herself from every angle.

A few minutes later, as the left foot gets close to having been as well worked over as the right, Roulette lifts it higher towards Supergirls face "Kiss it."

"Wha... What? I agreed to a foot massage, not... whatever that is." Supergirl leans away from the foot and shakes her head, confusing thoughts and feelings from her ruminations on Roulette and memories of Cat Grant warring in her mind.

"I never said that though, I said you'd treat them better than my pets, and they massage, kiss, lick and suck my feet until they both feel great, and so do I. This is really a quite simple request, it'll hurt no one and it's most certainly legal, so are you going to get back to it, or are you planning to break your word?" Roulette's smile is back to being predatory, any hint of the earlier softness gone.

"I.. I... you can't be ask.. of course you can, I should've known you'd make it something twisted." She looks back down at the foot, a memory of sitting below Miss Grant after the big CatCo gala and massaging Cats feet, all the while wondering what it'd feel like to kiss them pops into her head.
Swallowing out of nervousness, she bends forward and does just that, kissing the top of Roulette's foot, then the sides, and eventually the sole.
'I can't believe I'm doing this, I must be crazy, how bad would it really be if people found out I entered the club anyway, they'd believe me if I said it was for a rescue, it's the truth!'

"Lick"

With less hesitation this time, Supergirl tentatively licks her foot, then with more animation, and being very thorough, even going between her toes.
'Does she have some sort of Kryptonite hidden here? This should not be making me hot, I don't have a foot fetish do I, or maybe it's just the being told what to do part, my heart always did jump a bit when Miss Grant got extra demanding'

"Suck"

Not waiting for her to start, Roulette pushes her toes into Supergirl's mouth and can't help but smile at sinful sight and sound of the Maid of Steel kneeling there and sucking on her toes like they were her favorite snack.

After repeating it with her other foot, Roulette bends forward and pats Supergirl's head "Good job pet, that's one favor discharged".