Before you can leave, a knock at the door

You guide Carrie down the stairs to where all the clothes she had brought are. You sift through them for awhile before settling on a cute miniskirt, crop top, and some thigh high black socks to go with some black heels. A sexy school girl look just for you. You command Carrie to put it all on and she does so diligently. She comes back, your perfect little school girl and you have to resist the urge to take her upstairs again. But before you can do that, you hear a knock at the door. Realization dawns on Carrie's face as she remembers who it is.

"Oh shit that's Cassidy. I told her to come by," she mentions. "What do you want to do?"

"Well, we could bring her in on the fun," you suggest, already getting excited about possibly having two girls under your control. "You do need a nice little girl to play with dont you?"

"And my sister is hot," Carrie says with a smile. "I'd love to bring her in on it."

With that, you decide to head upstairs to a separate room and lean back. With a quick thought, you take full control of Carrie's body again, pushing her out of the driver's seat. You grab a handful of your tits for a quick squeeze before walking to the door. Well you try to anyway, walking in heels is a bit too much for you so you kick them off for now. With that, you answer the door.

"Oh hey Carrie...am I interrupting something?" Cassidy asked, holding a box and looking confused at your outfit choice.

"Not at all honey," you reply, enjoying playing the part of Carrie. "Whats this?"

"You asked me to bring all this stuff. Just the books," Cassidy said, still confused. "Don't you remember?"

"Yes of course. Here, bring them inside and set them down," you say, stepping out of the way to let your body's sister in.

Cassidy does so and you direct her to the kitchen table. As she does this, you excuse yourself for a moment, saying you wanted to get something for her as well. Going up the stairs, you grab another receiver pair. You also briefly leave Carrie's body to move to the computer and pull up the program.

"Are you not going to ask her to do it?" Carrie asks, getting back her voice control.

"Nah, I don't need permission. If they are on her in the right spots and the program is close enough to run, then it'll be fine," you smile as you set it up.

"Oh that's devious. My poor little sister has no idea she's going to be your puppet just like me," Carrie said, clearly turned on by the thought because of your sexual orientation.

With the program ready to run, you jump back into the controls of Carrie and head down the stairs. Cassidy was just checking out her phone as she waited for you when you bound back into the kitchen. You slowly come up beside her as you prepare to put on the receivers.

"Hey you gotta try these things out, they are like little massage pads," you say, getting ready to put them on.

"Oh that's cool. Yeah lets try it," Cassidy replies, barely looking up from her phone. "Not too long though, I do have things I want to do today."

You oblige and stick them both on. With that done, you quickly swap back and start the program. In a few moments, Cassidy doesn't even know it, but she is now under your full control.