Status Updates From The far horizons

This book needed a better copy editor. On page 351 "at the age of eighteen Grisha... married seventeen-year-old Sara." But on page 442, at the bris of their son "his mother, who was nineteen years old and his father, just twenty-three". How could he age 5 years while she only aged 2 years? This started as a three star rating, went down to two and now to 1.5,