That awful taint of spiritual energy was running out, and Yeriel barely managed to stop the beast after taking quite a beating.
After she reunited with her physical self, she was bleeding now. Not just from the wound she got from the beast, but by just drawing out more power than she was capable of.
Other than that, one side of the antlers on her head had broken in the combat—Yeriel had no idea what to think about that. Her mind had grown numb of all since they were dug into her head, but she was getting her sanity back the more the awful possessive power was drawing out of her.
Perhaps there was still hope for her to go back, as Oscar said it. Perhaps she would turn normal after she wasted all this energy. No, she wanted this power. This power makes her awesome. Nobody can get away with doing bad things to her ever again. She would kill them if they did, like that man she killed.