Tie Lilania up and punish her.

Using cuffs and ropes you got from the lingerie store, you tie Lilania up between two poles, standing and spread-eagled. You gag her with her own plain white panties and smile at her as she struggles furiously, arms and legs spread wide, caught in a shameful state of exposure with her breasts and thong-clad bottom on display. She's calling down all the wrath of the Goddess and her Seven Saints down on your head, but her words are muffled by her underwear, so it probably won't work.

People gather round to watch as you set about systematically humiliating her. No-one tries to stop you. Of course, nobody really likes street preachers, do they? Always getting in the way. Everyone's pretty happy to see them get their comeuppance.

First, you write the word HARLOT across her breasts with lipstick. Then you spank her bottom with a wooden spoon. Then you tickle her sides, play with her breasts and run your fingers between her legs until she's shuddering and moaning, on the verge of doing something very sacrilegious indeed. Then you spank her bottom some more. You're about to start tickling her again when the doors of the temple are thrown open. You vanished into the crowd as an imposing raven-haired woman in her early forties, wearing the white wimple and habit, comes striding down the stairs, followed by seven or eight pretty novices who seem to be the same rank and age as Lilania.

"What," says the raven-haired woman, "is going on here?" She looks Lilania up and down, her glare full of contempt. "Need I remind you that I am Sister Superior of this temple? And that the wearing of cosmetics and exciting underwear, not to mention all this bondage nonsense, is strictly forbidden to novices? You are in a great deal of trouble, young lady!"

Lilania squirms and struggles against her bonds as the Sister Superior lectures her on common decency, at great length, while the other novices giggle and whisper and make fun of her embarrassing state. It's clear she's not not going to live this down for a while.