By making her your stepdaughter

You kind of like your stepsister. At least more than you like Cora. And it pisses you off how quickly Cora tried to shift your manipulation onto Aimee.

So why not put Cora in the position she just tried to put Aimee in? You decide to try the time reversal Thaddeus mentioned. You screw up your face at the frozen frau and after a few false starts, you get the hang of it. Cora starts to deage before your eyes!

The tell tale signs of age around her eyes fade and she gets decidedly more milfy. You take note that she was fine in her early thirties and may need to come back to this age at a later date, but for right now you keep pushing her younger and younger until she's a bright and cheery 19. She could be Aimee's younger sister now, but not her mother.

A bit more mind control is in order. You focus in on her youthened brain.

"I'm your stepfather and you have to do what I tell you," you project into her.

Then you unfreeze her.

"You aren't going to put your chores off on Aimee, young lady!" you say. "You clean that bathroom right now!"

"But...but dadl" she whines. "I'm all dressed up for a date!"

"Then take that dress off and clean the bathroom in your underwear!" you command.

She pouts and whimpers, but she complies. She drapes her dress across a chair and you follow her, clad only in her underwear, into the bathroom.

"You don't have to watch me," she objects. "I'll do it."

You focus on her mind. "You like it when I watch you. It turns you on."

"But, you know, it might help if you made sure I was doing it right," she says.