The smoke coming off Rose's body started to thicken. Without warning, she started to twitch and convulse, her back arching dramatically. Her head was thrown back as if to scream, but only thicker smoke emerged.
Oak clutched her hand, stroking her brow as he made gentle, soothing noises. “Shhh, just let go,” he said gently. Her spasms grew increasingly violent, her whole body shaking across the floor. Smoke started to emerge from her clothes, coming out of sleeves and other gaps, so thick that before long I couldn't see her at all, only the silhouette of Oak himself.
And then it just stopped.