Blood and Salt by Kim Liggett

In the first book of the Blood and Salt duology, Ash Larkin is plagued by visions and nightmares of her ancestor, Katia. When her mother disappears back to a town she escaped long ago, Ash feels that she has no other choice but to follow her. What seem to be charming traditions turn out to be more gruesome and darker than Ash anticipated, and now she has to fight both for her mother and herself against Quivira before it's too late.