"I do, yes, but it's not the kind of healing that comes without consequences," she said calmly. "Black mana is the enemy of both green and white, where the traditional healing magic lies. My best bet is laying in a stash of healing salves and artifacts that give me access to the mana to trigger them when I need them most."

Because otherwise, she was left harvesting the life energy of living beings around her. You know...trees...plants...animals...glowy aliens...