The Potion Experiment in Bloomington, MN

The Potion Experiment is a middle-grade (ages 8-12) fantasy novel about friendship, self-discovery, and the surprising similarities between magic and science.
"I was not one to believe in make-believe. Not without evidence."
When thirteen-year-old scientist Ange is whisked from her home to the middle of a forest, she thinks she's cracked teleportation. Until she hears Eva's voice in her head, talking about magic and spells and a potion-gone-wrong.
Turns out Ange is stuck in Eva's body - in a world full of magic, where no one has heard of physics or chemical equations - while Eva is in Ange's world and a little too keen to start casting spells for the fun of it.
Now Ange needs to figure out how to swap back before they're found out. But if their constant bickering doesn't get in the way, Eva's habit of pranking and Ange's inability to catch toads just might.