That's all the encouragement Peridot needs to justify following up by dragging her forked blue tongue over the teardrop shaped gemstone.

This whole situation is a lot more lewd, a lot more forward than Peridot would ever even imagine being on her own, but she's in full on beast mode right now, and the light of the full moons is beaming down on her scales, energizing her. It's barely even really her at the moment, beyond the basic fact that these extremely organic instincts of hers are being motivated by all the love and affection and attraction she feels for her friend.