One day, my little sister and I were hanging out in my room. She was three at the time.

My grandmother had died a year before she was born, so my little sister never met her.

My little sister was playing with one of her dolls when she suddenly looked at something behind me. She continued to stare behind me when she giggled and said "Hi!" to whatever was behind me.

When I turned around, the only thing behind me was the wall of my room.

I turned back to her, and caught a glimpse of a person reflected in her eyes.

The person reflected in her eyes looked exactly like my grandmother who, like I had said before, had died one year before my sister was born.