I can't even count how many times I've apologized to my team over voice "SHIT FUCK! SORRY I threw the wrong orb! That's..... That's on me." the panic response is usually damage for me playing dps up until this point so trying to reaclimate myself to a healer roll has been weird.
I'll be glad when i git gud enough to stop doing this. And vice versa. I threw a healing orb into the enemy team's group at the start of a match in qp and then left out of embarrassment
Or you could just... fade to a healthpack, fade to another healer, or even fade to behind an enemy and suck a bit of health off of them with rmb. She's pretty OP once you realize she's got some of the best sustain in the game along with the best evasive ability.