Orgasms and punishment.

"Do you like that thing on your pussy?"
Jenya shakes her head 'no.'
"Then kiss it and ask me not to do it again.

Reluctantly, she does the former...

"Please don't zap me there again."
"You will ask me again- nicer- and call me your Mistress if you want leniency."

'Mistress? I can't! What's wrong with this lady,' she thinks.

Donna takes her silence as a 'no' and zaps her again!

"Ow! Please don't zap me again...Mistress," Jenya says, nearly crying as she does so.
"Good...but you can do better.

To that end, I'm going to please you and zap you. If you cum without asking permission, things will get worse"

'Worse than this?!?'

Donna smiles at the scared woman and begins to finger her pussy.
Once she starts to enjoy it, she zaps her clit to both punish and please her!

After about a minute of constant fingering and occasional zapping, Jenya asks to cum.

Donna, ever the cruel Mistress, makes her count to 5 first before letting it happen.

Jenya bucks against her ropes as the orgasm is ripped out of her and barely has time to recover before Donna is busy again.

"Close your eyes and wait for the new toy."
Fearful, she obeys.

Donna pulls out a vibrator and moves it towards her pussy...

This thing is strong enough to make the most penitent Nun cry out within seconds, so Jenya is screwed!