[A/N] Hello everyone! I'm not sure about you, but I have fallen in love with Jack- er, I mean, Rise of the Guardians. The movie. Not the character. Yes. Ahem.
Anyway, I wrote this one-shot because I wondered what was going on above the water - mainly with Jack's sister - when Jack fell into the lake and drowned, and became Jack Frost. After all, Jack's sister did just witness the death of her brother at only ten or so years of age. So here's what I think could have happened. I won't bother asking you to review because if you want to review, then you will :) I hope you enjoy it!

My Fault

"Jack!" I screamed, reaching for my brother. But he was gone. Panic flared up in my stomach. I could feel a sinking sensation that told me Jack was gone, but I ignored it. I fell down onto my hands and knees and crawled over to the hole, and lay down, peering into it. "Jack!" I yelled. I began to cry, hot tears of terror and guilt that I couldn't stop. This is all my fault, I thought to myself. This is all your fault.

I wiped the tears away as best I could, staring down into the black water. I couldn't see him anywhere. "Where are you?" I sobbed. "Come back. Jack!" I stuck my hand into the water, as if expecting his hand to grab mine. The water made my hand go numb instantly, and I pulled it out, and held it against my body.

I sat up and tore my skates off, and stood up. The cold seeped through my socks, but I didn't care. I ran back home, the snow sticking to my feet and kicking up onto my legs. I slammed open the door to my house. "Mom!" I shrieked. "Mom!"

Mom was in the room, but I hadn't seen her past my tears. She hurried over to me, bending down on one knee to look me in the eye. She stroked my hair, but it didn't comfort me. "Shh, shh," she soothed me. "What's wrong, my girl?"

I couldn't get his name out through my tears. "J… Jack…" I whimpered.

"What about Jack?"

"He… He fell i… into the ice."

Mom's face fell. "What?" she breathed. She jumped up and bolted out of the house, and started running to the lake. "Get your dad!" she yelled over her shoulder.

Still crying, I looked around the village, calling for my father. He wasn't around, but a neighbor approached me, and asked me what was wrong. "Jack fell into the lake," I told him. "Mom's gone to try and get him out. You have to help, please!"

My neighbor nodded, his eyes wide. "We have to hurry," he said, and we started running.

It wasn't far. But when we reached there, I knew it was too late. Mom was sitting at the edge of the hole, rocking back and forth, crying. "My boy," she was wailing. "He was too young! Too young!"

My neighbor raced over, ignoring the risk of falling in himself. He sat down at the hole with his legs dangling in the icy water, ready to jump in and try to save my brother, but my mother grabbed his arm. "No," she said. "It's too late. I don't want you… as well."

My neighbor nodded and pulled his legs out of the hole, and wrapped my mother in a hug as she cried.

I watched from the edge of the lake, the guilt making it hard to breathe. It was my fault, was all I could think of. I killed Jack. I killed my own brother. I couldn't get out myself and he killed himself to save me. I should have died. I killed Jack. It was all my fault.

My limbs felt as if they were made of lead, but I turned and bolted. I ran and ran and ran, into the forest, away from the village, away from Mom, away from that lake.

I was in the wilderness for three days by myself before I was found, half-starved and frozen. I didn't want to go back. I didn't want to go home, because all I could think of there was Jack's face as he fell into the ice. It wasn't a face that I was used to. It was a face that said, I'm scared. Jack was never scared. But he was then. And it was because of me.

For the rest of my life I never went back to that lake.

It was all my fault.