Find That Book

******POSSIBLE SPOILERS******I think I must have read it somewhere between 2011-2015. It was a pretty dark book, and my older brother checked it out at the library, and he was probably between the ages of 11/15, so I doubt it was a juvenile book, probably YA, but it could have been juvenile. It was quite a few years ago, but I was just reminded of it. It was a graphic novel. Kind of gory towards the end, or maybe I just thought it was gory because I was, like, 10. I think it was about this super rich guy who married this peasant girl, and she was shook because she was poor, and was surprised because out of all of these equally high class female citizens who were always fawning after him, he chose her. But they got married and lived in his mansion or whatever. I don't think it was set in very modern times. Maybe it was just sort of anachronistic. The only part I kind of remember is when the husband was away, and it was storming, and the wife kept hearing these odd noises in the walls and around. But she played it off and pretended it was nothing, but it kept going and so she looked around for the source. I think she found this secret hatch in the wall, and when she opened it the remains of the husband's ex wife fell out. So the ex wife possessed the wife to get revenge on the husband or take the wife's place or something like that. towards what i think i remember is the end, the husband was, like, in the woods on his way home, and the ex wife (possessed or something by his current wife??) stopped him and he was super freaked out, and then i think it ended. I think the wife might have had a necklace with a pendant on it that was significant or something. i hope this is enough information. i'll update if i think of anything else. i already asked my brother but he didn't remember. thank you!!