To Jane's delight, the phone did indeed have the app on it. She pulled it open while her brothers opened their gifts. The very first sentence she saw made her thrilled.
"Jane's parents refuse to spoil her." She changed "refuse" to "try". Suddenly, her clothes became fancier, her phone nicer, and her gifts far more expensive. There was even a set of keys to a brand-new car, and she only had her learner's permit! She generated another sentence.
"Jane's brothers are jealous." Well, not for long. Jane changed "jealous" to "fetuses" and suddenly, she was no longer a sextuplet. Sophia walked past, her hand resting on her new, massive baby bump. Jane quickly changed the now in utero quintuplets to be identical. It would make for a good news story when they were born.
Then, Jane got distracted, as the party was now for her and her alone, and she was the center of attention.
That night, Jane laid in her expensive bed in her massive room, looking over the changes she'd made. Her dad was now even more rich than before, and handsome to boot. After all, she wanted to have the best possible genes from both parents. Sophia wasn't actively modeling anymore. Now, she had quit to become a stay-at-home mother.
Jane had done a lot of changing to others, but not to herself. She took a deep breath and generated a sentence about herself.
"Jane is an overachieving, well-liked teenage girl."