It seems that currently Prayer of Mending attributes it's 2nd-5th bounces to the players they bounced from rather than the healer that cast them. Is there anyway to know who cast them and attribute the HP's healed to that healer? Or is this a limitation of Wow's combat log not reporting or remembering the original caster?
This has been mentioned a few times. If you cast prayer of mending on a warrior and it hops to the mage, and then look at the combat log, it would say that the warrior healed the mage.