Creepy

The girl, who will be three in July, told me several months ago about an older sister of hers who died in a fire. It didn't really strike me as much at the time, but she has since stuck with the story. Last evening, she told us more details. Her name was Katelyn and she was at home alone at grandma's house. No one else died in the fire. Ok, starting to get a little creepy. This evening, hubby asked the girl where Katelyn was. The girl told us that she died in the fire. Now I'm completely freaked out. I'VE never had a daughter names Katelyn, must less one who died in a fire. Is she remembering a past life or does she have and overactive and retentive memory?