I need help finding a book I was reading in middle school. I forgot the title and can only remember a vague description of what it was about. I really enjoyed it though and want to finish reading it so if any of you have a clue of what the title is please let me know.
The book starts off telling the story in the perspectives of three different people. The first one is a fairly normal kid living a normal life. It switches to a tomboy princess in medieval times, who would disguise herself so she can fight with knights. After her, the story focuses on an alien who I believe had some different abilities.
Something happens and they all get warped into a world together. The story continues with them working together to try and get back to their own worlds.
If any of you have any idea of this book's title, please post. I'm desperate to start reading it again.