Soon, Lucas had enough wood to build a small fire towards the entrance of the cave. It would provide enough warmth to fill the small cave and also vent the toxic smoke away from Eva.
Eva was drifting in and out of sleep, which worried Lucas. He wondered if he somehow miscalculated how much stress her body could take. Or perhaps she had somehow contracted some sort of disease only known to humans.
He had roughly grasped what she could or could not handle over the months they had spent together. However, he also did not usually push her as far as he had this time, prioritizing her comfort.
It was useless to curse his failure now. He busied his hands with making medicine that would hopefully bring her back to health. If all else failed, he would use as much mana as possible to heal her.