I remember when they made rape illegal within marriage, though I can't recall how old I was then, probably in my late teens. Before that, there was no such thing as rape within marriage, it was the man's right to have sex with his wife whether she liked it or not. Even today, many men don't seem to realise they no longer have that right.
There was also no law against a man beating his wife even up to the early 20th century, and even then the police took little notice. Given all this, why on earth should anyone expect a novel set in the sixteenth century not to have these attitudes?