I remember seeing a ghost in my house when I was around 7 or 8 years old. It was late at night, sometime after my sister had fallen asleep in the next room. For some reason, I decided to get up and go out into the living room. When I was just outside my door, I remember being a bit startled by a woman with long dark hair and a flowery nightgown standing in the middle of the living room looking at me.
Somehow I wasn't scared, just curious. This woman could have been a burglar for all I knew, if it wasn't for what she was wearing. I was just about to say something to her, thinking she was either my mother or my sister, when she put her finger to her mouth, gesturing for me to be quiet and presumably not to scream. She started walking toward the kitchen, and that's when I looked through the open door into my sister's room to see if she was in bed. To my surprise, she was! I then looked back in the woman's direction, only to find she'd completely disappeared.
Whatever I had wanted out in the living room was completely forgotten by that point, and I went back to my room and fell asleep. The next morning, I told my mother what I'd seen and asked her if she had been in the kitchen the night before. She said no, and also said she thought I'd probably had a very vivid dream and not to worry about it.
I knew I had been awake the entire time, and since then I've thought about it a bit. Who was it, when did they die, did they possibly die in the house? Whoever she was, she must have been very nice, because the way I felt that night looking at her is not at all how I'd think anyone would feel during and after an encounter with a ghost. Even though I wasn't scared, it's definitely something I almost vividly remember all these years later.