Whoever sent this book to me, a person who's been very open about being incestuously abused by my mother when I was a teen: YOU ACTED IN VERY POOR TASTE. If you meant it as a joke, it's not funny. If you meant to be hurtful, all you did was dredge up memories of how tough it was to forgive the old lady before she died.
But forgive her I did, and no amount of distasteful reminders will cause me anything like the pain of being such a shitheel no doubt causes you.