A Field Guide to Broken Promises, by Leah Stecher

For years, Evie's family has moved every year or so as her mother got promoted to better and better jobs.  But now, Mom says that she's finally landed the perfect position and with luck they won't ever have to move again.  Entering junior high this year, Evie is excited about making friends that she can hold on to.  Because of the constant relocations, her only real friend is Dara, a girl at Jewish summer camp.  With all the potential in front of her, Evie is excited to start school.

When Evie shows up on the first day, she is surprised to see her friend Dara in the first class!  What are the odds that the school that Evie would move to would be the same one that Dara attends? But to her surprise, Dara isn't happy to see her and immediately starts spreading stories that they barely know each other.  Worse, she says that Evie is a stalker and moved here solely to follow Dara.  Hurt by the rejection and the bullying campaign that Dara organizes, Dara becomes convinced that something bad has happened to Dara and Evie starts digging to find out why her best friend has rejected her.

While the story primarily focuses on Evie's desire to fix everything around her and the bad choices she makes to try to achieve this, there's also some room in here for family separation, siblings, and religion.  The story itself is a gentle fast-paced middle reader intended for "reluctant readers" but it isn't dumbed down.  In fact, it takes a pretty sophisticated take on the way that complicated grown-up relationships mess up children (Evie's Dad and Dara'a Mom are definite pieces of work!).  Unfortunately, the grown ups come in at the end and fix almost everything, so only a little bit of the story is about Dara learning some life lessons.