He nodded, "Very unusual indeed," he said. He wanted to think no more of it, but something in the back of his mind told him that there was something very wrong.
"Should we check it out?" she asked him. (Sorry; I'm on my phone, so it autocorrects and is just generally stupid with grammar.)
"Just to be safe," he said. He only hoped that they didnt end up regretting his decision. (thats okay!)
Rosy nodded, and led the way towards the front of the train, where ponies would generally be shoveling coal. However, when Rosy peered inside, she saw two things. One, two ponies were sitting on the ground, unconscious. Two, the flames were spilling over the furnace, getting closer to the two ponies. "They must have inhaled the smoke!" cried Rosy.
"Get them out of here, quickly!" he ordered, as he began to use his ice powers to try and put out the flames.
Rosy's horn glowed as a blue aura settled around the two stallions, making them lighter, and clearing the air around their snouts. She pulled them out as quickly as she could, and then returned to Frozen's side, her horn still glowing, blowing cool clean air over the two stallions, and trying to consolidate the flames. It wasn't a huge fire, and after a few minutes, it died down to a normal size.
Rosy nodded slightly. "It destroys so easily. But it's under control now. We should probably leave before anyone sees us. The last thing we want is to be noticed, right?"
They went down the train until they got to an empty corridor. Rosy leaned against a wall, and was quiet for a moment. Then, she lifted her head up. Her foreleg was singed, and there was ashes under her eyes, but she smiled. "Hey," she said, grinning. "We just saved two ponies' lives."
"We made a difference to those two ponies' lives!" said Rosy, excitedly. "They can go home to their families! They have a life, because of us!"
Rosy thought for a moment, and then she looked at the soot on her arms. "We should probably go get some of this off." She said.
Frozen blew a cold gust of wind upon her, which lighly dusted a portion of the dust and ash off of her.