There is a little girl sitting on the floor in a dark room

I had a horrible experience one night ten years ago. My family and I were living in an old apartment that was many years old. I woke up that night and found myself in a very strange situation. My room became so dark that I could hardly see anything. But I sensed something hovering nearby. They are always out of my sight, but I can clearly hear the sounds they make. I tried to leave the room, but the door wouldn't open. I became increasingly distraught because I felt a strong negative energy pervading the room. I started screaming, trying to get my family's attention, but to no avail.