Shelby tells me someone calls her name at night

While on the way to the in-laws today, Shelby told me in a real matter-of-factly sort of way, that last night someone was calling her name and it woke her up.

She said it was a little girl's voice that repeated her name a few times. She woke up and said, "What?" thinking that it was Sophia calling her name and it was time to wake up or something similar. But Sophia was asleep and there was no one else in the room.

Shelby then told me that this had happened once before, a few months ago, and that she forgot to tell me.