If Tony needed any further proof that he'd discovered the demon's weakness, the way the thing shouted and screamed in its struggle was a pretty good indication. No more blithe impudence or arrogant taunts; the monster was in survival mode, careless and desperate. Afraid. Its strength offered no advantage as it was wrestled to the ground. Of course it fought, futilely, screeching and blustering. Before Tony got off his shot, it hurled every disgusting epithet it could think of (the well of a demon's profanity ran deep), still trying to free itself in vain. It was in the midst of a particularly nasty rant about Tony's mother when the energy discharged, sending Wanda's body into fresh convulsions as her muscles seized with the shock.
The blast did its job, effectively immobilizing the beast inside her, momentarily suppressing it somehow. The seizure ended and her body relaxed, falling limp into the viscera on the floor. When Wanda's eyes flickered open, they were her own again, her gaze simultaneously agonized and relieved. "Tony," she murmured, voice weak and drew in a few shuddering breaths, wincing in pain. She tried to smile at him, but it looked more like a grimace, and she whispered, "Thanks" before closing her eyes and succumbing to the pain. Wanda slipped from into soothing unconsciousness, free of the fear and horror of wondering what the demon was doing while she was trapped in the darkness.