I always tell the healers if they are playing well that they are doing great! I had this one scholar in Secure 8v8v8, (but everyone was in the middle anyway nobody cared about the OPs) and he saved me soo many times and made me get highest kill count in the game. But I didnt have time to give commendation because he left before I could give it.
So I'm always thanking healers that do well before the game ends