Punish her with sound.

"Is that thing in there nice and snug," Donna asks.
Jenya knows not to speak- lest she be punished, so she nods.
"Good."

She goes around in front of her and holds a small device in her hand.

"Do you know what this does?"
She shakes her head.
"It does this."

As she talks into the device, the probe inside of Jenya's pussy shocks her hard.

It stops when the sound stops.

"Yeah, it reacts to sound. The more noise it picks up, the more it shocks you.
You're going to keep quiet now for sure, aren't you?"
Jenya nods vigorously.

Donna smiles. It's so easy to break this bitch.

"Of course, I'm not the only thing that can make noise..."

She holds the device up facing the TV and turns it on.
The TV was on quite loud last night- by design- so the sound shocks Jenya harder than ever.

Donna slowly lowers the volume...but doesn't mute it.

She walks away to watch Jenya struggle in her hogtie on the tile.

The shocks range in ferocity based on what's happening, so she can't ever relax.

After a few agonizing/fun (depending on who you ask) minutes, the phone rings.

The sound punishes Jenya again before Donna grabs it.

"Hello?"

Donna casually walks over the bound woman while she speaks.

"Oh...it's you."