You make Sasha sweat it out.

With the other ladies immobilized, broken or working for you, you return to Sasha.
She still can't get loose.

You lead her out to the back of the Villa and activate the Steam Room.
She is led inside and tied up tightly on the benches...

You lock her inside and leave her to sweat.

Going back inside with Jenni, you watch her co-worker strain and sweat in the Room.
Those hidden cameras you installed sure do keep paying off.

An hour later, you check on her.

She's too exhausted to sit up now from all of the heat and sweating.
In spite of that, Sasha still tries to struggle, albeit in vain.

You make your rounds to check on the other ladies in their positions and return after another hour to check on Sasha.

All of her energy is drained and she lays still (but breathing softly) on the bench.

Rewinding the footage, you can see that she made one last escape attempt by jumping to the door and trying to break out.
That obviously didn't work and she used her remaining energy.

You go retrieve her from the Steam Room and carry her **** body in front of Mallory, who panics at the sight.
You assure her that her friend is fine and retrieve a bucket from the ice container.

Returning, you tell Mallory that she has two options...

1) She begs you to douse Sasha with the ice water to wake her up
2) She begs you to douse her with it instead.

The ever-submissive Mallory opts for the latter, begging sadly to help her friend.
She gets her reward.

Sasha is carried back inside and left to recover on the couch next to Jenni, who happily rubs up against her in bondage.
Let's see if this loosened any tongues...