The contextually disobedient wife. Don't hit me.

"Rich is the man whose wife is dead and horse alive"

This is an anonymous proverb from Agricultural France, back in the day not long before Bluebeard would begin to be first told. While today, the tale speaks volumes about the man's treachery and blatant criminal record, the society from which this tale comes is one where family and marriage were only just worth the procreation that they enabled. According to sociologist Edward Shorter, in France a husband would likely be publicly humiliated for not having control of his wife by riding an ass backward through town. The death of a child was so common that it hardly caused sorrow, and in fact infanticide or [close to it] the abandonment or giving away of children was not uncommon. Thus, it is unlikely that emotional attachments existed to any great degree like they do today. (Sociology 101 text, by Rodney Stark)

Put in this [breifly described] setting, the crime of Bluebeard's murders and the crime of his wife's disobedience can be met at a much more level plane. Perroult's morals back this as well: while "Curiosity... can bring with it serious regrets," and "women succumb," "You will understand that this tale is one that took place many years ago. No longer are husbands so terrible".

Another proverb from the same time and place to end on -
"The two sweetest days of a fellow in life,
Are the marriage and burial of his wife."