Here is just a sampling - come and get 'em!
Frontier Magic Book 1: The Thirteenth Child by Patricia C. Wrede 18-year-old Eff must finally get over believing she is bad luck & accept that her special training in Aphrikan magic, & being the twin of the seventh son of a seventh son, give her extraordinary power to combat magical creatures that threaten settlements on the western frontier.
Gringolandia by Lyn Miller-Lachmann In 1986, when 17-year-old Daniel's father arrives in Madison, Wisconsin, after five years of torture as a political prisoner in Chile, Daniel & his 18-year-old "gringa" girlfriend, Courtney, use different methods to help this bitter, self-destructive stranger who yearns to return home & continue his work.
Jack Tumor by Anthony McGowan 14-year-old Hector, suffering from severe headaches, is diagnosed with a brain tumor which speaks in his head, calling itself Jack Tumor & making an effort to improve Hector's home life, increase his popularity, & win him a girlfriend before the operation that will mean the end of one or both of them.
The Joy of Spooking Book 1: Fiendish Deeds by P.J. Bracegirdle As 11-year-old Joy Wells, proud resident of the nearly-abandoned town of Spooking, tries to stop construction of a water park in a bog she believes is home to a monster & the setting of her favorite horror story, a man with his own mysterious connection to Spooking will do anything to stop her.
Just One Wish by Janette Rallison 17-year-old Annika tries to cheer up her little brother Jeremy before his surgery to remove a cancerous tumor by bringing home his favorite television actor, Steve Raleigh, the star of "Teen Robin Hood."