She can't carry her clothes if her hands are stuck. Secure them somewhere on her body.

"Why yes, you're right I did promise you that."

You theatrically pace a few steps, acting as if you're thinking out loud.

"But your wrists are stuck to your thighs. Gosh, how are you going to carry your clothes in this state? Mhmm.."

She glares at you. You're not sure if it's an expression of anger or dreading whatever answer you come up with. You walk behind her with the bundle of her clothes, pull back her garter and thong and wrap the bundle of her robes and bra around them in a big knot. From the back it almost looks like a bunny's tail, and it shakes when she turns to look at it.

You stick her staff in her hand down at her thigh.

"Okay, now run along"

"Fiend" she snarls, before waddling over to the window and clumsily stepping outside onto the roof. You can see her sliding down onto a bale of hay and rendevouzing with the other elves, who untie her. After an exchange of words you see the diviner puts her robes back on but hands her bra to the topless Cira - even if it's ill-fitting. Zed's out of luck, and only has his sheets.

The trio slink off into the distance. You smirk to yourself at another job well done.