I rewrote the ending for this chapter. I hope you enjoy it considerably more than you would have enjoyed the previous ending.
Kristoff held his ear to the side of the dome. He couldn't hear anything, but he kept trying.
Anna, on the other hand, was holding herself softly, trying to keep warm while inside the ice dome.
When Kristoff heard her body whimper from how cold it was, he ceased his efforts and cradled her close to him in his arms.
"You're fine, Anna. I've got you."
She smiled appreciatively at him.
Being cut off from the danger around them, they completely forgot about it. Anna was just awestruck at the figure who, she knew, would do anything and everything to keep her safe. Kristoff was similarly awestruck at the sheer beauty of this woman who had chosen to love him above all others.
They were forced out of their silent admiration of each other when the ice began to move above them. the inside of the dome pressed against Kristoff's back and force him and Anna to follow its movements.
Eventually the light they had in the dome increased and the ice began to slowly melt away. They were outside the castle.
Kristoff scrambled to his feet and went down to get Sven ready. He carelessly cut the rope the tied the sled full of ice to Sven. He'd come back for it later. When he'd emerged from the stables in which Sven had resided he saw Anna pounding the door for Elsa to let her in. Kristoff scrambled clumsily up the slippery steps and picked Anna up to put her onto Sven.
"Put me down, Kristoff!" She cried. "I have to help Elsa."
"Elsa will be fine, it's you who's in danger." Kristoff told her.
"You can't know that." Anna said.
"When I was in there, Isabella practically ignored Elsa. Even with Elsa being weak against fire, she's still a threat. When I came, she attacked both you and me. She doesn't want Elsa harmed. I don't know why, but she doesn't." Kristoff explained to Anna.
"Oh... I think I know why." Anna said, still in Kristoff's arms. "She wants Elsa to freeze everything."
Kristoff simply said, "Oh."
Kristoff had made it, Anna carried in his arms bridal style, to Sven. His mind went back to the first time he had carried her like this, when Elsa had frozen her heart. He placed her gently on the back of the reindeer and mounted it himself.
"Ride like the wind, Sven. We've got to go faster than we've ever gone before. Come on, buddy." Sven bolted, almost throwing Anna off in the process, but she wrapped her arms tightly around Kristoff's stomach. He loved Anna clinging desperately to him. In fact, he just loved anything that involved protecting her. Except the danger. That he could do without.
"K- Kristoff?" Anna tried to get his attention.
He looked back at her, and she pointed into the sky.
There was what appeared to be a streak of fire a couple hundred yards behind them and a little bit above them; it was low enough to the ground that Anna and Kristoff know it wasn't a comet.
"Sven, if you can't, that's fine, but could you maybe go a little faster?" Sven snorted at Kristoff's request and did his best to oblige. The party gained a little bit of speed and continued down the mountain. In just a couple minutes Kristoff and Anna looked back behind them and noticed that the fireball was gone from the sky. In a few more minutes there was a large explosion behind them that threw them all into the air.
Elsa followed Isabella as quickly as she could; however, she was grounded, having to dodge trees and other hazards, while Isabella was in the air. Elsa was obviously falling behind.
To make matters worse, Isabella was flying low enough to the ground that, occasionally, sparks would fall onto branches and start them on fire.
Elsa tried her best to put them out before they could run wild, using her little "melt the ice into water" trick that Andrew had taught her, but it was clear that Elsa had to choose: stop the fires, or stop Isabella.
Elsa decided on stopping Isabella. If she stopped Isabella, she couldn't make the fires anymore, and if she did it fast enough, the fire might not cause much damage. If Elsa stopped the fires, Isabella would have most likely made a lot more fire in her absence and, possibly, even have gotten Anna by the time she'd finished dousing the flames.
In Elsa's thoughts, she purposefully avoided thinking about what would happen if Isabella did manage to get Anna.
Elsa, even when using her powers to create ramps for herself to skate and gain speed on and ignoring the trees sporadically catching fire, was continuing to fall behind Isabella. Elsa knew she had no hope of even keeping her current distance. In a few minutes, Isabella would be completely out of Elsa's vision.
Elsa was at a loss for what to do. She could only think of one thing to do, she desperately wished she could think of something else, but nonetheless, desperate times...
Elsa, while still pushing herself to keep up with Isabella, brought her left hand forward and aimed it at Isabella. She folded her ring and pinky fingers in against her palm and put her thumb on top of them both, pointing her index and middle directly at Isabella. She aimed very carefully, judging exactly how fast Isabella was gaining distance.
She shot a single blast of ice from her two fingers.
The blast flew directly through Isabella's chest, freezing her heart.
Elsa saw Isabella jerk slightly before beginning to lose altitude. Elsa lost direct sight of Isabella behind trees, but she could see roughly where Isabella would have landed.
Rather than skate there, Elsa chose to walk. She had tired herself by skating and using her powers faster than she thought she'd ever done before.
After a short while, Elsa made it to a clearing. At the very least, this was near where Isabella ought to have landed.
Elsa looked around, but she couldn't find any sign of Isabella.
A quick note: Although Elsa isn't bothered by extreme temperatures thanks to her powers, she is very sensitive to temperature changes. It is because of this that she became aware of the temperature rising when most other likely wouldn't have. She glanced behind herself, and she saw the fire heading right for her.
Elsa was able to dodge the blast. mostly. The fire was close enough to Elsa to cause a small hole to form in the side of her dress. It also ended up hitting her cape, creating a hole in that as well.
Elsa noticed the warm air against skin that was usually cooled by the ice dress. She looked down to see the hole and waved her hand; the hole filled in when she did. Isabella noticed and gasped.
"Ice clothing?" She looked down at her own apparel and the look on her face seemed distant.
"Thats... very interesting." Isabella began. "I wonder." She waved her right arm along her left; the sleeve of her dress burned away, replaced a split second later with a sleeve that was a bright amber color. She brought her left arm along her right and willed her flames to replace that sleeve as well.
"Looks like I can have more appropriate apparel, considering my position." She said coldly
Isabel lifted both arms and fire swirled around her, burning her old dress away and replacing the thread with her own fire.
The fire extinguished itself, and by the time Elsa was able to get a clear view of Isabella, the dress had formed into an exact replica of her own. The only noticeable difference between the two dresses was the color they were crafted from.
Had someone touched the dresses, they would have felt that Isabel's was much warmer than Elsa's, but they probably would have guessed that had they known the origins of each dress.
Once Elsa got out of her initial shock, she spoke to Isabella.
"How are you okay?" Elsa was shocked and slightly concerned that Isabella showed no signs of having a frozen heart. Anna had become extremely weak when it first happened, and she even had some difficulty immediately after it had happened. They had both gotten over it fairly quickly, but there was... something.
"I... froze your heart. You should be dying right now." Elsa informed the girl. Elsa was relieved to see that she hadn't killed her. She didn't want to kill anyone.
"Don't be the monster they fear you are."
Despite the identity of the man who had said that, it served better to keep Elsa's powers in check than "Conceal, don't feel."
Elsa's attention was snapped back to Isabella when she began speaking once more.
"Elsa..." She started. Isabella was talking to Elsa in a way that made Elsa feel like she was a child and not in a good way. "If I could be killed by you freezing my heart, I would be dead right now."
Elsa thought about that for a short period of time. At least half a dozen questions surged through Elsa's mind in response to Isabella's reveal.
All of the questions manifested themselves at the same time in the form of:
"Wait, what?"
I seriously want to see if you guys can find every time I foreshadowed something... I think almost every plot element has been foreshadowed at some point in this story.