She climbed onto the elevation as well so she wouldn't have to remain standing as she got to work. This would already be difficult enough as it was, as Snefrid had proved to have a very tough body even in humanoid form. Moving towards here had already been painful and taxing enough that Mizuki had been seeing black spots near the end of it, so she had to pause to try and recover a bit before she got to the bloody work.
There wasn't anyone but Zelrius close by a the moment, other than the dead he had already gathered. That was good, since she doubted everyone would be as tolerating of this as the golden-haired man. Turning back to the corpse she slowly placed her clawed fingers on the breastbone, then added her other hand before taking a deep breath. Slowly, with difficulty and as much care as she could muster, she began to cut open Snefrid's chest, the iron claws managing to pierce skin and flesh even though the battle had done a number on them. They hadn't been broken, but Mizuki would have to visit a blacksmith to repair them to optimal condition once she had recovered more.
Skin, flesh, muscles, sinews, nerves, Mizuki tried to keep her breathing steady as she dug her way into the body, the smell of blood that had not yet fully cooled off thanks to being hidden inside the body assaulting her nose even more so than before. Since the blood was no longer being pumped throughout the body it wasn't as messy as it could have been, but Mizuki still had to work her way through as blood covered her hands, tainted her upper arms, made it difficult to make out the insides as everything was painted a dark red. There was bile rising in Mizuki's throat, but she stubbornly kept digging, forcing Snefrid's tough body tissues to yield under her iron claws.
She reached the ribcage, where she had to grab the breastbone and pull it out of the way, an act which had more black spots dancing in front of her eyes, her arms screaming at her in agony as she tried her best to keep the ribcage as whole as possible even as she opened it. If she was in a better shape she could have done a better job, as it was she couldn't avoid breaking some of the ribs. Even with her claws and the fabric of her gloves her hands were still slippery because of the blood, the body itself was slippery because of the blood. She'd probably have nightmares about this at some point, once she had gotten enough rest to be clear of mind and realize just what exactly she had been doing. Under any other circumstances this would have horrified her as the desecration of a body, gory and bloody.
Then, at least, once the path had been cleared with much work (she had refused to let Zelrius help. This was something she wanted and had to do, if he wanted to honour her as well he'd have to do it his own way after she was done with this) the heart lay before her. It was still, no longer beating, making Mizuki hesitate for a moment as she stared at it. There was a sense of guilt: maybe she was doing the wrong thing. But she shook her head, trying to ignore the wave of dizziness that came with it, and carefully grabbed the heart with both hands and pulled it out, using the iron claws to cut away the veins and arteries that were still holding onto it.
Holding the heart in her hands Mizuki looked at Snefrid. She had made a mess of the wolf's torso. She hoped she'd be able to undo some of that once she was done with the heart. Then she looked at the heart. Like the blood it had been kept relatively warm due to being hidden deep inside the body, where the cold of the outside air hadn't been able to completely leech it of warmth. However now she had removed it, and it would become colder soon. She couldn't hesitate any more, as she opened her mouth to reveal sharp teeth and even sharper canines.
The heart was one of the strongest muscles in the body, and Mizuki found it difficult to pierce it with her teeth. She forced more strength into her jaws even as another spike of pain shot throughout her body. The big muscle resisted, stuck together stubbornly, then finally was torn apart by her canines, a flood of blood entering Mizuki's mouth together with muscle, sinew and nerves. She wanted to puke, but swallowed it down anyway and continued eating. After the first bite she managed to get the hang of it, the wolflike Felis slowly but surely devouring the heart of the Lunatic Princess. Blood dripped down her chin as she forced herself to swallow bite after bite, trying her best to chew every bit of tough muscle as finely as possible. It was a task which required her minutes, as sometimes she had to take a break to breathe heavily and fight back the urge to vomit it all up, as she had to try and subdue the pain that shot through her as she forced herself to keep eating even as her body demanded rest.
It was a good thing that the heart didn't contain any bones, so Mizuki could keep eating until there was nothing left. There had still been plenty of blood left inside the heart, of which she had drank as much as she could while the rest had ended up around her mouth and on her legs as it dripped down. Her hands and arms were a bloody mess. She might contract a disease from doing something so unsanitary. However it was now done, as Mizuki licked the last pieces off of her hands.