As soon as Jeff's fingers began to glow Chelsea froze as she felt a warm sensation begin to flow through her body starting at her finger and toes making its way to the center of her body.
"Jeff, no, please!" Chelsea begged as she became warmer, the tips of her fingers and toes becoming pink.
"Chelsea, please you made up your mind so I'm going to teach you a lesson. I already have your virginity, but if I can't have you... well. What's the point?" Jeff smiled. "Trust me, you'll learn to love your brother".
Chelsea opened her mouth to argue but was suddenly over come with a massive orgasm, shutting her eyes as she her body was racked by the sudden feeling. Her legs and arms slowly changed to a bright pink. Jeff continued smiling as he watched the changes continue.
"You'll be able to go anywhere with me after this is done"
Jeff, with his other hand, snapped his fingers causing the clothes Chelsea to disappear. Her bare perky breasts now out in the open to see again and the front of her pussy still wet from her time as a sex doll. The pink had now spread to her stomach and was slowly traversing up to her chest.
Chelsea opened her eyes to her captive's voice, she looked down to see the change was still constant. The warmth now enveloped her being as she felt herself begin to shrink.
"Jeff, please!" Chelsea pleaded as she shrunk down to about a foot tall, the pink coloring was now at the base of her neck.
Jeff's finger stopped glowing as he slowly lowered his hand. He walked over, picked up his small pink sister and returned with her to the bed.
'You don't have to do this', Chelsea whimpered in a high pitched voice, as Jeff set her on his leg in a standing position.
Jeff didn't respond as he stared at his sister. Slowly he took his finger and purposefully ran it over Chelsea's body, as he touched, her pink body slowly became softer. Chelsea's arms and legs drew into her body, leaving only a torso and her head left. Her pussy now full access to anyone who wanted to touch it.
'Now if you try to fight, I'll continue the transformation'.
Jeff grazed his finger over his sister's body, bringing it to a stop right underneath Chelsea's pussy.
"JEFF. NO. STOP. DO-" Chelsea's words cut short as the pink slowly moved to the top of her head and began sinking into her body. Chelsea's body smoothed out as a perfect cylinder, leaving only a pink vagina that resembled his former sister's.
All that remained was a pink flashlight in Jeff's hand. His finger still in front of the hole he slowly began to insert his finger. Although Jeff could feel his sperm still coating the inside of his sister's vagina, the ridges of the tube gripped tight to his finger.
"Oh Chelsea, I wish you could be here to experience this with..." Jeff stopped as a grin crossed his face. "Well, you can be. Anything that happens to you in this form you're going to remember. That way you know exactly how serious I am."
Jeff laid back and positioned his sister above his erect cock. He eased Chelsea's inanimate body down until the head of his penis hit the back of his sister's fleshlight.
"If you can't bear to love me like I love you, then you'll learn to listen to my commands', Jeff moaned as he pumped Chelsea faster and faster.
Chelsea's pussy expanded and contracted to fit the larger dick into the tube with every pump.