Mia gets pleasured.

'Fuck. This feels good,' Mia thinks.

Christina is sucking on her nipples and loving every minute of this.
The bound and gagged woman can do nothing to stop this- even if she wanted to.

'My nipples are OOH so sensitive, but there's OOH no way that she knows this. I can't say anything, even if she RIGHT THERE took he gag out.'

Christina knew.
Mia's past as a bit of, well, a whore has left many a man behind who knew just what she liked.
Not much incentive was needed for them to give that information up.

'I'm gonna...I'm gonna cum soon. She needs to stop this. Please don't stop!'

Christina knows that it is coming.
She's going to make the bitch cum.

She pulls Mia's head forward and locks eyes with her as she tongues her right nipple.
She cums.
Hard!

Her body shudders with delight and she is nearly sweating as she comes down from this.

"That sounded good. So...I think you know what to do now."

Christina unbuttons her blouse further and pulls her breasts out of her bra.

She gives Mia a kiss on the gagged lips.

Christina pulls her head forward and undoes that gag.
Mia gets used to the feeling and then locks eyes with her, well, Mistress.