jack and elsa: unexpected meeting

Jack landed softly on the snow-covered ground.  He had been flying around exploring the world when he had spotted something in the mountains.
A girl was walking lonely in the darkness with a purple cape dragging behind her.  Jack felt like something was pulling him toward her. He knew she could not see so he decided to follow her for a bit. She was walking slowly with the wind against her slowly climbing up the mountain.
There was something about her; it looked like she was broken as if she had lost everything.
Suddenly she started to sing, her clear voice filled the cold empty air.
Jack felt like someone just had hit him in the stomach. The song was full with sadness, he wanted to put his arms around her hold her and comfort her.  
But just as it sounded like the girl was going to break down she raised her voice and the song got a different tone.
She threw up her glove and ice sparkle from her hands.  Jack took a deep breath; she had the same power as him.  He watched the girl starting to play with her power. Her song had changed from sadness to a melody of freedom.  The girl’s movements enchanted him. She released her cape and let it fly away in the cold wind.
She now walked with strong steps and her song got stronger.  Like a kid seeing snow for the first time she played around happy.  
To Jack’s awe she created a stair of snow from a cliff.  She placed her foot on it carefully but when she saw that it held she smiled big and ran happily up. The stair grew before her and moved up. Jack flew after her on the wind, he watched her amazed. He no longer felt that sad feeling in his stomach; it had been replaced by something else.
When she reached the other cliff she stomped in the ground and sang high.  Jack took a step back it, the girl emitted a power full aura and the broken girl who had lost everything was gone.
his heart felt strange, he put his hand on his chest. It was beating faster and faster but why.
In front of him the girl created a castle of ice. It was sparkling and breath-taking just like her. He saw her throw away the crown and change into a beautiful new dress. She let lose her braid she walked with confident steps.
Jack was amazed, the girl had transformed in front of his eyes.  The broken sad girl was no more; this strong beautiful woman had replaced her.  She stopped singing but her voice still echoed in his head. It felt like the air had totally escaped him.  Never in his life have he wished to be visible as much as that moment. To be able to touch.  He wished with his whole heart that she would believe in him.  The girl turned around and her eyes widened.
“ Who are you?”  She asked.