Maddie held onto all the power she'd channeled, feeling it accumulate all throughout her body until she was fit to burst with negative energy. She had enough power readied to level a building or three, but there was no way she was going to unleash all that with Erica in the line of fire. Instead, she held her fire, knowing that there would come an opening soon enough. When the assassin slipped out of the line of fire next to the sleeping couple, Maddie's choice became a lot easier to make. Those were the two jerks who wanted to smite her. Maybe they were mean, but she wasn't going to hurt them just for no reason. Instead of unleashing everything, she let half the collected energy lash out into the area of the sleepers and the assassin, wide enough that there would be no dodging this time, channeling it into a spell that would knock everyone unconscious instead of killing them. Well, technically speaking it was going to kill a few brain cells, but that's what healing potions are for.
Lena, meanwhile, was all like "derp!" Then she lost consciousness.