She confesses her feelings and breaks.

"Why were you upset when you found out that he was fucking you and not me? Do you want me to fuck you?"
Shay says nothing, so you keep flogging her big tits.

"Do you want me to fuck you? Have you secretly wanted it for a long time?"
Shay says nothing.

"Alright- she's going back in the box. Four hours this time."
"No- wait! Yes, I've wanted you to fuck me for months...okay, years. I'm sorry...Master."
"Thatta girl," you say, "I'll fuck you...once you fully submit tonight. Tomorrow is your lucky day...if you behave."
She nods.

You have your man pull out of her pussy and put your fingers in their place.

You take the now-mostly-broken MILF and have her switch positions with the man.

"You're a slave that sucks dick. Say it."
"I'm a slave that sucks dick, Master."
"Good- then prove it."

You push her into position and she takes his cock, now coated in her juices. She takes it deep...

You force her to suck his cock until you don't need to make her go deep on it.
She embraces her new role as your cock slave, it seems.

For the next part of her training, she gets a gag that keeps her lips open and goes back to sucking cock.
No stopping now!

She keeps sucking and pleasing him as you command her to.

For the final part of today's training, she gets rope tied under her breasts, clamps on her nipples and keeps sucking cock.

She doesn't complain.
Does she like this?

When you're done with her, you let her rest and look forward to tomorrow.