My 40th birthday ended the moment my sister exploded at my teenage daughter over a bicycle—and crossed a line no mother could forgive.

They stopped emailing for three days.

Then my mother sent a handwritten letter, twelve pages on monogrammed stationery, blaming me for turning “a tragedy into a war.” She wrote about Brooklyn’s nightmares, Vanessa’s depression, my father’s blood pressure, and the shame of seeing our family name in the news.