Dreamed of a little girl ghost, meaning?

I dreamed I was in a run-down mansion I had never seen. I was upstairs and there I saw about 20 ft. directly opposite of me, the ghost of a child. It was a girl, with curly blond hair and older clothing. She just stared at me. I asked where her mother was and she said she didn't know, then ran toward the open balcony and threw herself over. Then, horrified, I went downstairs to use the bathroom and she reappeared. I asked again where her mother was and she once again said she didn't know but that she was beautiful, like me. I was too freaked out to go anywhere else so I left. I kept bringing people I knew in real life, back to the house with me to show them but she never reappeared. What does this mean?