Desperate
The diary entry Elsa had read had forever changed her. No longer would she occasionally leave her room, or chat with Anna. Even her parents were no longer allowed inside her room. She had decided it was much too dangerous. In fact, she was so nervous about casting an eternal winter over Arendelle, she had ordered a new cell be built to house her. Of course, her parents claimed this wasn't necessary, but Elsa insisted, and eventually Agdar relented. However, he claimed only in a dire emergency would he even begin to think about allowing her inside the cell.
Over the next few months Elsa began to become more and more distanced. First she wouldn't allow her parents in her room. Then she cut all contact with Anna. There was no more notes, no more simple "Thank you" or "yes's" from Elsa through the door. It became so hard, Anna began to knock on Elsa's door less and less. This didn't go unnoticed by Elsa, only serving to make her more distraught. But she told herself she deserved it, and that she was a monster, and the only way to protect her family was to stay away.
After a month of growing more and more distressed and depressed, Elsa worked up the courage to enter the ice chambers again. As she sat finishing the diary entry that had sent her on a downward spiral only a month before she noticed something strange. A blank page that had fallen out of the book, it glowed, almost like it was written in ice. Carefully she picked it up, and discovered it was indeed written in ice.
Today was the worst day of my life. I did discover that I could write with ice, however, that did nothing to heal my broken heart. I finally did it, told Øyvind about my powers. I thought he was ready, ready to accept and trust me, even with these powers. But I was wrong, dreadfully wrong. As soon as he saw the ice escaping from my hands, he screamed and ran. His last words were, you're a witch. Freak, never come near me again" It hurt, hurt to a point of no return. So I tried to commit suicide. I know it's terrible, but I just couldn't take it anymore. Basically, I stabbed myself in the head with father's sword. I remember pain, and darkness, and then I was sitting in bed, completely healed, with only a snowflake shaped indent on my forehead. I still don't know how this happened...
As Elsa finished the note, many thoughts whirled around in her mind. The main one was that it was quite unlikely she would ever find true love now. Of course, she always knew she would never find someone, but deep down. Way deep down if you looked really hard, there was a part of her that dreamed of love and romance. Of being whisked away and never worrying about her powers and her royal status ever again. But it was just a dream, and now it was reality that it would never come true. In the past month everything had been taken from her, all her hopes, dreams, and wishes, everything. Elsa, had nothing left, and she didn't know what to do. She had no desire to live anymore. The only thing she could do at the moment was curl into a ball on the ground and cry, ice and snow swirling around her, and that is exactly what she did.