Better Than the Best Plan by Lauren Morrill
Plans are made to be broken. It's the last day of junior year, and seventeen-year-old Ritzy - short for Maritza - is pretty sure she has a great plan. Summer job - check. Hang with friends at the beach - check. Keep looking after herself as she's been doing since her mum bailed to follow her bliss - check. Or no check? After someone reports that Ritzy is living alone, a social worker shows up and puts her into foster care. That's surprise enough. But there are more surprises in store, and not all are unpleasant. Like the cute, friendly boy next door. When Ritzy's old life catches up with her new one, she has some tough decisions to make. Can she plan for the worst, but still hope for the best?