Book 2 in the Dorothy Must Die series by Danielle Paige.
There's A New Girl From Kansas In Oz... And She Has A Mission:
Destroy The Road of Yellow Brick,
Save Her Home.
The Wicked Will Rise.
The Dorothy Must Die series is an alternate Oz book series by Danielle Paige that features a new girl from Kansas named Amy Gumm. Amy must go up against an evil Dorothy Gale who has taken over the Land of Oz and rules it with an iron fist along with her three companions.