Adventures of a teenage witch

Persephone Jackson (Percy Jackson) is a normal girl in the fourteen hundreds. Her two brothers, Hiccup and Jack , are her role models. But when one runs away, she and her brother are left to fend for themselves. After falling in a frozen lake and almost dying from frost bite, she is frozen in time by her father Poseidon in an attempt to keep his only daughter alive. Centuries later, she is found by a wizard professor named Dumbledore. He saves her from the ice and takes her to Hogwarts, assuming someone with such a powerful magical signature has to be a wizard.