I don't know what made me say it.

I was lying in my bunk, staring at the tent ceiling, crying again. Harry was guarding the tent. My mind was going haywire, but I didn't try to organize it. When it was confused like this, I couldn't think, and I didn't want to think. I knew I would only dwell on matters that didn't mean anything anymore. He was gone forever. Suddenly, I heard Harry's heavy footsteps as he sprinted across the wet earth. I could hear a second pair of boots thudding along behind him. Unthinkingly, I sprang from the bed, my wand aloft. I felt certain that Harry's pursuer was foe rather than friend. Harry entered, followed by Ronald Weasley.

I don't know what made me say it.

Fury gripped me. Pure anger. I had cried myself to sleep for weeks over him, and now he was just coming back? Pretending that he had never walked out on me? I was so mad...

I don't know what made me say it.

Now everything's ruined and it's all my fault.

I don't know what made me say it.

"Avada Kedrava."