Move on, but not before giving her a challenge

"Your wish is my command, 'your highness'," you say, stepping forward to offer your cum-soaked hand to 'Queen' Mina with a flourish.

"Finally, thy show the proper respect for thine Monarch," she replies with a smile, before grasping your hand and bringing it up to her mouth. She proceeds to lick and suck her own cum off of your fingers, then runs her tongue greedily over your palm and the back of your hand to get the rest of it. The eroticism of it all is enough to arouse your lust once more, which in turn starts giving you more ideas.

Mina eventually finishes her meal, leaving your hand coated solely in her saliva. Wiping her mouth with one hand and licking the cum/saliva mix off of it, she uses her other hand to gesture to her vagina again and says, "Very good. Now, make thyself useful and help Us finish cleaning Our ROYAL VAGINA!"

You snicker once more at this. As fun as it would be to continue feeding Mina her own cum, it could take a while, and you are already thinking of better ways you could spend your time. Still...

"I have a better idea," you say to her, "I'm going to leave you here, and you're going to try and convince anyone passing by to feed you your cum as befitting your royal status. Once your cum is completely cleaned up or the mall starts closing, whichever happens first, you will be free to get up and go about your business, and you can go back to acting like your regular self again."

"Of course, m'lord," Mina says, going from demanding to submissive in a heartbeat, "But... in this position, We are **** to all sorts of malicious fiends."

"Quite right," you agree, before waving down the security guard you noticed earlier, "Hey! Can you come over here?"

The security guard, a rather large portly fellow, walks up to the pair of you. Utterly unphased by the Asian pussy on display, he asks, "Is there a problem?"

"Not yet, though I have a favor to ask you," you reply, "I'm sure you heard at least some of what I told this fine beauty here to do. Would you mind keeping a close eye on her during her game to make sure she isn't assaulted or arrested while attempting it?"

He looks over at Mina, then turns back to you and replies, "Sure, I can do that."

"There you go," you say to Mina, "You have your own personal bodyguard now. Who by the way, does not count as someone you can ask to clean you."

"Why of course not!" Mina replies, dramatically gasping at the thought of it, "That is too lowly of a duty for the Royal Guard. Their first and only priority should be the protection of their Queen."

You notice the security guard roll his eyes at this, and you can swear that Mina's face betrays a hint of embarrassment for a split-second. Before you can comment on it though, she speaks up once more with a regal air, "Will that be all?"

"Almost," you reply, "Hand me your phone for a second. I want to add my number to your contacts."

She reaches into her purse and daintily hands it over. You take it, quickly put your name and number in, then hand it back and say, "If I call or text you at any time, you are to respond as soon as possible. I also expect you to text me if you manage to succeed in getting your pussy-"

"Thou means Our ROYAL VAGINA!" Mina corrects harshly.

"Right, your 'royal vagina', clean before the mall closes," you finish. If you are still here when she does, you could meet up with her for some more fun. Or at the very least to get a ride home, since you're pretty sure your car is still back at your apartment complex.

You start to walk off, then decide to leave Mina a 'little' reminder of this session, "Oh, one last thing. Even once you go back to acting and speaking like yourself, you will still only be able to refer to your vagina as your 'Royal Vagina', and will add the word 'Royal' or some variation of it in front of any word you use to refer to something your vagina does or produces. And you will always project your voice loudly whenever you say these things, no matter the context or where you are."

"We would not have it any other way," Mina replies. As you walk off, you hear Mina shouting to someone, "You there! Peasant! Come here and serve your Queen Her ROYAL JELLY!"

You smile to yourself and think about what you want to do next. You could always try and find someone else to mess with, either at the mall or around town. Or you could just kill time while Mina tries to finish her task, though you have a feeling she won't be leaving that bench anytime soon.