Suddenly you look in the mirror. You're horrified by what you see. You're half woman half boy. You can't believe what's going on. You scream.
Your mom comes running up the stairs. "What's the matter, sis?"
You yell, "Sis? What have you done to me?!"
Your mom stands next to you, looking in the mirror. "You're my new sister. Once you become a woman, we can do everything together! We'll share bras, clothes, makeup! It'll be so fun!"
You were horrified. "No! This can't be happening!"
Your mom looks at you. "Can you... turn around?"
You turn around, hoping she'll turn you back. Your mom lifts the dress and looks at your new butt. "Damn sis you've got a fine ass!" She slaps your ass.
"Mom!" You shouted, pulling back, and swiping your dress back down. You briefly rub your butt, trying to rid the light bit of pain from the slap. "Seriously, what the fuck?!"
Molly let out an uncharacteristic giggle, which you shuddered at. "Oh, hush, sis. You're going to just love your new life. I can just imagine you being a good 'Auntie' to Hannah and Emma. It's going to be awfully cute...heehee, I can just imagine it."
You, on the other hand, shudder at the thought. "Y-You're completely insane."
"Really?" She paused. "Tell me, sis, did I force you to put on that dress?"
"You gave me tits, so obviously you could..." Suddenly, you stopped yourself, realizing the implications.
"Yes, sister, I can make you embrace your role whenever I want. You didn't even notice you were acting differently until now. In the end, if I so choose, you won't know who 'Miles' is...or was." You stood in silence, your body still adjusting into its new form as she continued. "Still, I want to give you one more chance. One more chance to be a good person to me. As fun as it would be to just change your mind immediately, it doesn't teach you anything. Hopefully, you'll actually give me genuine love for once."
"I-" You were about to retort before pulling back, not risking getting further on her bad side. "Yes, Mom..."
"Mom?"
"Molly! I meant Molly!"
She smiled. "Good, Myla! That's your name now. Say it."
"M-Myla."
"Now, Myla, listen to me. You'll act as my loving sister who will offer to go shopping often. You'll act as Aunt to my kids. You'll get a job. You'll flirt with men. You'll be a mature, adult woman."
"If I don't do those things?" you stutter out.
"Then you'll act that way anyway. It's just up to you which way you want it to happen."
You pause again, overwhelmed by this. It was...so evil...but then again, you didn't really have much choice in the matter.