If the opportunity presented itself while Lilissa was leaving, where the lizard-like girl wouldn't see her while sneaking up behind the elderly preist, and the preist didn't have line of sight to her either, Rissle would sneak out from behind the alter she had used as her temporary hiding spot, and try to grapple the old man from behind, one hand over his mouth to keep him from making any unnecessary noise. The voracious and bountiful village maid heading out would have made a far superior meal, but she might very well be a candidate to join their cult. Though certainly not dragonborn, she herself might feel some connection to the rather scaled group.