Treehouse school?

I had a dream I was talking to a girl..maybe 13 years old who told me she died due to some type of rare blood disease. She was sitting on a ship in front of this treehouse which was also used for a school. The ship had obviously washed up to shore because I could see caln ocean water in the distance and drag marks in the sand. She told me her life story and pointed to the entrance and kind of led me into the treehouse. Upon entering there was a huge sign that said Crystal Reiki and an old man and other children were sitting around in a circle as he taught the class. The doors closed behind me to the treehouse after I entered and my dream ended.