Nova and the Ghost

On her first day at her new school, Nova made two new friends. One is a goofy boy named Ayden who makes her laugh. The other is an unwanted ghostly companion who terrifies her. For thirteen-year-old Nova, everything is strange: new town, new apartment, new school. When her father left their family behind, Nova's picture-perfect life crumbled. Her mom is never home because of her new job, and they had to move.which means starting a new school and struggling to find new friends.
What could be worse than mean girls who don't get what it's like to have celiac disease, lonely evenings as a latchkey kid, and missing her best friend, Ceci? For Nova, it's the so-called friend she didn't plan to make...a strange ghost girl who follows Nova through the school begging for help that Nova doesn't know how to give. With the aid of two friends, one new and one old, Nova is determined to solve the mystery surrounding the desperate specter who's haunting her.
Will they discover how to put the troubled spirit to rest? Or is a decades-old secret too disturbing to ever be brought to light?