The succubus smiled to herself as she pierced Niarra's hymen, noting the girl's lack of pain... or, perhaps, feeling pain as pleasure.  "There... was that so hard?  Now, let's give your friend a show, make sure she knows how much you're enjoying it," she teased.  After a moment, she whispered another command: "Tell her exactly how you feel, and be honest," saying it loud enough for Lyla to hear.  As she spoke, she toyed with Niarra's breasts with both hands, paying special attention to the elf's nipples, letting her tail continue to pleasure the elf's sex.  Her tail started off slow, almost gentle, but as she continued to play with the elf's body, her tail began to move faster, thrusting harder.