Taking Amiee's Place

Looking in the mirror I didn't see ME, I saw a young looking girl with pert little breasts and a shocked expression... “HOLY SHIT! I look like your daughter Amiee!”
My girlfriend said, “You don’t just look like her, you ARE Amiee now. Wherever she is she’s turned into the old you. I hope she likes being a 35-year-old man! The little brat ran away from home because she didn’t want to spend the summer with her Grandmother. Her filthy RICH Grandmother! I’m not losing that inheritance because Nana didn’t get to see her little angel, so, sorry, sweetie, you’re going to take her place for the summer!”
“But I’m your BOYFRIEND! I can’t pretend to be your daughter! Oh god… it feels so weird being so tiny and soft! Please, momma, turn me back…. Wait… why am I calling your momma?”
“I made you look just like her, but you’re not a witch like her, or me… so that obedience spell tat she got out of works just fine on you. And you’re going to be a perfect teenage girl all summer for nanna, aren’t you sweetie? Wearing all the frilly dresses and going to the parties like a little debutante should. I know you’ll try to fight it, sweetie, but I know you can’t break the spell…. In fact… if nanna has her way and finds you a nice boy to marry, you might never come out of that spell. Isn’t that wonderful sweetie?”
“Ohno… I can feel the spell… no… please… I… ohhhh… yes momma! I hope nanna finds me a nice boy to marry!”