No, she's not a demon, although it wouldn't be the first time she would be called one. It wouldn't really come as an insult to her, but regardless it's good that the thought doesn't last long in Beau's mind.

She shudders and sucks in a breath when Beau's fingers move faster, going deeper too, and her whole body tenses and arches eagerly to meet each thrust. Her own hot fingers seek entrance too, pushing past the tight hole and filling Beau steadily, soon picking up on a pace to match the other woman's.