One Last Stop by Casey McQuiston
Ever since she was a small child, August Landry, the main character of One Last Stop, has spent virtually all her free time helping her mother investigate a family member’s unsolved disappearance. As a result, she’s never really had friends before. That all changes when she transfers to a college in New York City, where she has to share an apartment with three roommates who forcibly befriend her and help her find a job waiting tables at a 24-hour diner.