Wrap them around her wrists

You securely tie the suspenders around her wrists before walking back, and you will time to resume. As you watch the resumption of Evellyn's movement you spot her brief moment of confusion as her hands tug at the fabric holding it in place, before she looks down to find herself no longer covering up but her wrists restrained instead, unable to pull them up above her waist. She sinks a bit further behind the boxes. Evellyn struggles for a few seconds, her breasts bobbing about as she's straining against the bondage of her own bra, before she stops and snaps her head towards you with an incredulous look.

"Are you kidding me?!"

"You wanted your bra back" You retort

"You know damn well what I meant!" She shouts as she continues to tug, unable to do a lot more than pull her stockings up a little bit and get her tits to wobble. "And what I meant was not bondage!! Untie me right this instant!"