Laura DeKraker Lang-Ree, Harker’s K-12 performing arts director, recently completed work on her first book, titled “The Cancer Parent’s Handbook: What Your Oncologist Doesn’t Have Time to Tell You.” More than a decade in the making, the book — available in bookstores on Feb. 16 — contains insights on how to raise children through the difficult stages of living with cancer, based on her own family’s experience grappling with the leukemia diagnosis of her daughter, Cecilia (a member of the Class of 2013). It is available to pre-order through its official website, as well as online booksellers such as Barnes & Noble and Amazon.