Author's Notes: I had the idea to just do a bunch of random Frozen drabbles, wherein Elsa has different elemental powers. Because different powers is fun.
"It-it was an accident," Elsa stuttered, staring at the smoking hem of her sister's nightgown in disbelief. She'd managed to put out the fire quickly, but there was still a blistered patch on Anna's legs that made Elsa cringe, and her mother and father pale.
"I know," her father said, placing a hand on her shoulder and squeezing gently. "But this is why you aren't supposed to be alone with your sister, Elsa. Remember? Conceal..."
"Don't feel," Elsa recited, as if on autopilot. "Don't let it show."
"Exactly," the King smiled, and picked Anna up. Mercifully, she was still unconscious. "Stay here, Elsa. We have to get Anna treatment before she gets worse."
Elsa nodded, pacing the floors of her bedchamber. Smoke started to wreathe her head as her footprints burnt themselves into the wood and tiny tendrils of flame flickered across her fingers.
"Conceal, don't feel," she chanted to herself. It had always been this way, as soon as the King and Queen discovered that Elsa could control fire. She'd been locked away from the beginning. She liked it that way, really. She didn't want to hurt anyone. She hadn't even known Anna existed until she'd sneaked out of her room for a bedtime snack and literally run into the younger girl. She knew it was a mistake, but it was hersister and she hadn't even known she had a sister, and Anna liked her, really liked her...
She should have known that it would all end up like this. Elsa's shoulders slumped as she finally curled into a corner, flames burning through the wood to either side. They'd had to reinforce her bedroom she didn't know how many times, but wood was better than metal. Wood burnt to soft splinters and ash, metalmelted and she was not immune to the burn of that. They'd found that out the hard way.
"Don't let it show," Elsa nearly shouted, fingers digging into her palms as another billow of smoke choked her room.
It didn't work, though. Nothing ever did.