Lock and Key by Sarah Dessen
High school senior Ruby finds herself in a precarious position when her alcoholic mom ditches her and she is left to fend for herself in the six months left before her eighteenth birthday. She tries making a go of it on her own, hiding the fact that the water and heat in her rented house have been turned off, but she is eventually found out and sent to live with her uber-successful lawyer sister Cora (who she hasn’t seen in years) and Cora’s technological whiz-kid husband Jamie. Being catapulted from skid row to the equivalent of VH1’s The Fabulous Life of… leaves Ruby suspicious and unwilling to believe that the good times will last. In fact, she still keeps the key to the old house around her neck just in case she needs an escape hatch. But as she begins to collect new friends who gently but insistently begin to demand her attention (bossy, cell-phone obsessed classmate Olivia, OCD-suffering boss Harriet, more-than-just-a neighbor and smokin’ hot Nate) Ruby begins to relax into her suddenly safe and spacious new life. Until she discovers that perfect Nate has some family secrets of his own, secrets that she unfortunately understands all too well. Can these two fiercely independent teens learn to lean on each other? Or will their pride keep them apart? Sarah Dessen maintains her signature deep and introspective style in this, her eighth novel, and fans will recognize some familiar characters from Dessen’s other works embedded in Ruby’s story. If you like Lock and Key, you’ll want to go back and read Dessen’s backlist, especially my favorite title