Expand the threads

Sarah figured it was worth a try, and it wasn't like she particularly cared what happened to, say, Rebecca. She began to expand the thread connecting her to Rebecca, and saw that the link connecting Rebecca to her card was acting very strange, and as it widened, energy was flowing into her body and changing her. The first change were her clothes, which transformed into a sheer dress identical to the one on the card, clearly too big for Rebecca, until Sarah began to notice her body filling out. It started with just her breasts, which began to steadily grow, but after a while, Sarah noticed that her belly was growing a bit too. At first Sarah thought she was becoming fatter, but after a few seconds, she recognized it for what it was. A baby bump. She glanced at Rebecca's face, and saw the slight wrinkles around the eyes and corners of her lips that signaled that she no longer had the body of a young woman, but now she was, well there was one word to describe what she looked like now. MILF. More surprising even was the blissful expression on her face as she looked down on her body, as if she were loving her changes.

Sarah realized that she could probably keep going until Rebecca looked almost exactly like the figure on the card, or simply leave her in this half way form. She could also do the same for any of the others.