Aeryn has participated in similar rituals many time.  This pooling of power, merging of effort comes easy to her.  She does poke Xen sharply when the barbarian rolls her eyes, but drops into her trance seamlessly.  Prayer, she decides, will be her most effective active contributin other than passively allowing her own powers to be tapped.  her mind clears, her face softens as she gingerly draws upon the source of her gifts to aid the entire circle.