Shrimpington
Haley Archer was an ordinary witch with an extraordinary love for painting. She lived before the time of the founders of Hogwarts, she lived as one of the earliest witches known to wizard kind. She painted the first wizard painting, she was the first to put life into her work. Each and every one of her descendants shares the same love of art, the same skill with a quill, the same habit of painting with their wands, and the same hidden talent.
The talent to create worlds and life with one simple stroke of their wands.
Emilia Archer is no different from the rest of her family. She paints with her wand, loves the art, has exceptional handwriting, and has the well known talent. So when one of her paintings goes drastically wrong, and the other paintings of Hogwarts begin to be terrorized by the rouge painting, it's up to Emilia to fix the mess she's started.
After all, when it's Grindelwald that she's painted, many things could end very badly.