Sabine’s crime, in my mother’s eyes, was not any wrongdoing.

It was ambition of the unforgivable kind: a woman without the right name, the right money, the right lineage, presuming to marry into the family and carry its heirs.

My mother did not hate Sabine for anything Sabine had done.

She hated her for what Sabine represented — the collapse of a boundary my mother had spent her whole life policing.

And once you understand that, the monstrousness becomes almost coherent.