A dream about my toddler niece & a ghost?

Last nite I had a dream that my niece was sitting on a bed by herself and she started waving at something and then she became really scared so i grabbed her and took her to where the rest of our family was. she was unbelieveably scared. in the dream we were in a hugh scare leaky dark dim place but being with my family made it seem 100% better. ive been like a mother for my niece she has a mother but shes young and selfish and talks about herself constently... please help me find out what this dream could possibly mean.. oh yeah i couldnt see the ghost in my dream but i knew it was there.