Despite how difficult the succubus was making it for her, she was clearly enjoying the feeling of the tail, giving an almost cat-like yowl or pleasure as she feels it working into her. "Mmm, very good. You'll want to practice with it each day, and before long, you'll find it as useful as a third arm. But, as promised, your reward," she says, murmuring softly, against the elf's skin, as she presses her own tail in, deeper, shifting lower to slide her lips and tongue over Ruby's newly enhanced breasts, teasing them skillfully, as both her fingers and tail work to bring the elf to a quick climax.