I assume Meleth positioned herself to stand over Kyo and in front of Kitai with her pelvis level with her face.  Since her mouth, or rather her tongue, is focusing entirely upon her clit, it wouldn't be too much of a strain on the kittygirl's neck to hit the angle needed to do that.  She's most likely be using her gyrating hips to add to the motion of her upper body and tongue by distant extension.<br/><br/>Though if she were to sit so that Kyo could take over, she would have no problem making out with the generous priestess.