Humiliate her

"Thanks, now suck my cock clean."

A totally defeated Marianna turns around and kneels in front of you. She reluctantly sucks your cum and her own pussy juice off of your cock.

After she's finished, you push her off. "Wipe my cum off of your ass."

Marianna takes a tissue and wipes your cum from her ass.

"Keep that tissue in your bra for the rest of the day."

Marianna puts the tissue in her bra.

"Put your panties back on."

Marianna, avoiding eye contact with you, does as she is told.

"Good, now tuck the back of your dress into your panties. When the next bell rings for class change. Walk down the hall with your dress tucked into your panties. Keep it there until someone points it out to you."

"You're really enjoying this, aren't you!" Marianna says almost spitting the words at you.

"Of course, probably as much as you enjoyed fucking the PTA president's husband."

Marianna reaches behind her and tucks her dress into her panties.