A Werewolf's Tale

I forgot what it was like to be human, fully human that is. I don't remember the pain of the werewolf's bite or anything else on that frightening day. I was only five years old, then. My mom told me that on that night, a huge malicious wolf attacked our home and bite me. The villagers scared him off but it was too late to save me.
The villagers were afraid of me. They told my mom to kill me before it's too late. But she refused and took me away to the outskirts of town. There, we lived undisturbed for thirteen years. It was on my birthday when a stranger knocked on our door. I don't know him, but my mom seems to.