(Just giving the option to write your own character story. This is just a suggestion, but this should be a shrinking or inanimate transformation story due to the obvious fact that the main character is trying to torment and or get rid of the others, but feel free to do what you like. I only ask you give the option to maintain the story if you do. Everyone else in the story is fair game. I made some choices, but feel free to make more. Please, no reality changing so no one notices.)
So this is a story of a Jealous little sister who wants to torment and be rid of her older sibling/s for one reason or another and gains the ability to do so by whatever means. They all live with their parent/s in a large town, and it is currently summer. No one is aware that the girl is thinking of ways to get rid of her sibling/s, the dangerous part is that the girl is pretty smart, she knows that she can’t just kill them, this would cause her to end up in jail, and she would rather not risk it. She deserves to get everything she wants, and there has to be some way to get it. AND SHE WILL! What's their name and what sibling/s are they jealous of: brother, sister, both, or multiple brothers, sisters, or a mix.