A reader on goodreads is looking for the following book:
"Looking for a book about a highland wife who is raped while her husband is away and is pregnant upon his return...he tosses her out without explanation, then when his valet and doctor arrives does he find out that his wife was brutally raped in front of his people while his mother who was bedridden was threatened with their force to co operate... they tore his wife apart and then this man raped his mother and cut off her head which he brought downstairs to keep everyone at bay as he raped the wife repeatedly before fleeing. he thought the shameful looks his people gave him he thought it was because he was cuckolded but it was their shame in allowing it. It sounded familiar (parts of it to me)...but I cannot find the original search, but hoped someone may have recognized it...thank you"
This sounds a little bit familiar to me too, but i haven't been able to find it yet.