It was a week before Matilda started to realise that Jenny's self-denial was stronger than she'd thought. A week in which they determined that Matilda had in fact gained greater control of her powers, albeit not great enough. Where she'd once had to use her powers almost hourly around Jenny, it had decreased to only once or twice a day. So it was from this that Matilda formed her newest plan to test the boundaries of her and Jenny's relationship.

"I think we should do it again," she mentioned, as casually as possible. "The experiment, I mean."

Jenny choked on her tea, but Matilda paid no notice.

"I mean, obviously it improved the situation somewhat," she continued. "So, it's only logical that repeating the experience would, in essence, strengthen my resistance further. Like building up a muscle."

Jenny tried to neutralise her expression and nodded, slowly.

"So, exactly the same as last time?" she asked.

Matilda inclined her head. "For the most part. There's a possibility that due to my now greater resistance to my powers, it may take longer than the first time. Strictly speaking, it could perhaps require more than just… fantasies."

Jenny frowned at her immediately, and Matilda cut in before she could argue.

"But, I am more than aware that this would be crossing a line." Her voice was even and steady as she proposed her next idea. "I may have come up with a middle ground."

Jenny's eyes flickered with wary interest. "And?"

"If we can get me to a certain level of… desperation," she began. "A point at which I would be so focused on – on my desire, that you could untie one of my hands. Then, removing the blindfold wouldn't be my priority – my priority would be… well, you know."

Jenny's face had flushed a pretty shade of pink, and she swallowed. Her voice was rough when she spoke.

"So, you think that it would exercise the muscle, so-to-speak, if we could get you to a state where you can use your hands but still manage to resist using your powers." she summarised, a question in her voice.

"Essentially, yes." Matilda knew she'd won as soon as Jenny met her gaze again.

"I suppose we've already gone this far," was all she said.

There was an odd sense of déjà vu as Jenny wrapped a scarf around Matilda's wrist. The silky fabric beneath her fingers brought back flashes of Matilda, squirming against her restraints as she rolled her hips fruitlessly. Jenny felt her cheeks get hot, and she turned away under the guise of picking up the next scarf. She was gentle and methodical as she tied Matilda's second wrist, taking care to note the quickest way to undo it.

Matilda watched her work, not bothering to conceal the fondness she felt as Jenny's tongue peeked out in concentration. She lay comfortably on her back, in deliberately skimpier clothes than the last time.

"Okay," Jenny said finally. "Head up."

She fastened the final scarf around Matilda's eyes.

"And for pity's sake Matilda," she said, an undercurrent of desperation lacing her voice. "Remember to wait until I'm out of the room once your hand is free."

Matilda tried not to smirk. Perhaps it was mean, but Matilda was tired of being denied what they both wanted. Tonight, Jenny was in for a show.

Hopefully with audience participation, Matilda thought wryly. Realising Jenny was still waiting for a response, she huffed out a yes.

"Okay," Jenny sighed. "Whenever you're ready, I suppose."

This time, Matilda didn't imagine anything. Instead, she kept her entire focus on her movements. After an appropriate amount of time, she let her breathing pick up. She only heard Jenny shift because she was listening for it. Matilda squirmed in place, feeling hotter in spite of herself. She heard Jenny's breath hitch in response. She felt a grin worming its way onto her face and paused to clear her expression of anything besides lust.

Jenny's knuckles were white from the way she'd clenched her hands around the armrests of her chair. Matilda was squirming more than last time, chest visibly rising and thighs rubbing gently together. Jenny felt herself flush as she observed her, but never looked away. She'd been warned that Matilda would have to get further than last time. Had to reach a stage of so-called desperation. Jenny clenched her jaw resolutely.

Matilda didn't hear another peep out of Jenny for at least five minutes. It was time to up the ante. She tugged lightly at the wrist restraints, feeling Jenny's eyes burning into her. All but panting now, Matilda let out an obscene moan. Jenny's answering whimper was quiet, but had Matilda smirking internally, if a little more flushed.

"Jenny," Matilda begged, with exaggerated desperation. "Please, please touch me."

Jenny coughed awkwardly. "I think it's time I remove the scarf," she said, laying a hand on Matilda's wrist.

Matilda shook her head, perhaps too quickly. "Not yet," she panted. "The longer I last, the fewer times we have to go through this. I can last longer."

Jenny made a noise of scepticism but complied, not reaching for the knot. Matilda took great care to notice that Jenny didn't remove her hand from her restrained wrist. Matilda evened out her breaths before she proposed her idea, the next stage of her arguably devious plan.

"I don't think I can get any further without… additional stimulation," she said, carefully. Jenny's hand tightened on her wrist unconsciously as she hummed questioningly.

"You don't have to do anything that makes you uncomfortable," Matilda continued, quickly. "But if you could maybe keep touching me, I think it would be… helpful."

There was a beat of silence from above her, and Matilda wondered if she'd pushed too far. But then the hand on Matilda's wrist slid lower, along her forearm to her elbow. When Jenny spoke, it was from directly beside Matilda's ear.

"The same applies to you." Matilda shivered at the breath caressing her face. "If anything, I do makes you uncomfortable, you tell me straight away."

Matilda breathed out her agreement and felt the warm presence beside her retreat as Jenny's hand slid down to her bicep. Inside her head, Matilda was elated. Everything was going exactly according to plan. She arched into every touch, as Jenny's hands wandered over her arms. Let her breathing pick back up. Set her hips rolling and dropped her legs apart. Felt Jenny's hand tremble when she whimpered her name.

Jenny didn't know what in God's name she was doing. Matilda had begged, so prettily, to be touched. She'd already been right beside her, already been touching her. It had been so, unforgivably easy to give in. The line between them was as blurry as it got, and it was getting far, far too difficult to pretend she didn't want it to vanish completely.

"Jenny…" came Matilda's breathy moan. Jenny felt her resistance crack and dragged one hand down from Matilda's arm, across her shoulder and between her breasts to rest on her stomach. Matilda's hips bucked.

"More," she whispered, half-afraid she'd break whatever spell Jenny had fallen under. Jenny's hand slipped beneath the hem of Matilda's shirt to reach the bare skin of her abdomen.

As if burned by the skin-on-skin contact, she jerked her hand back.

"I'm taking off the scarf," she snarled, her voice as angry as Matilda had ever heard her.

Viper-fast, Jenny unfastened Matilda's wrist and stepped away. Desperate not to let her plan go to waste, Matilda shoved her hand down her pants before Jenny so much as reached the door. Still blindfolded, Matilda could only hope Jenny didn't leave.