Back When We Were Grown-ups - Anne Tyler

One morning, Rebecca wakes up and realises she has turned into the wrong person. Is she really this joyous and outgoing organiser of parties, the put-upon heart of her dead husband’s extended family? What happened to her quiet and serious nineteen-year-old self, and what would have happened if she’d married her college sweetheart? Can someone ever recover the person they’ve left behind?