Scrapbook ghost follows me home!

I want to take a moment of your time to share an experience and a photograph that I believe to be of supernatural interest and speculation. My family and I have been witness to some very strange and unusual activities over the past two years that I believe will be of interest to you and your site. I have attached a photograph for your review. About two years ago, my wife, child and I moved into a rent house in Mesquite, Texas. One Fall evening shortly after our move-in, I was visiting my sister who lives just a few blocks away. As the evening got late, my sister mentioned that she had been collecting antiques and wanted to show them to me. She took me in her spare bedroom and the two of us spent a couple of hours looking at old tintypes, photogravures and various sundry of items that were in excess of a hundred years old. She had one particular item that struck me as odd and left me with a very strange feeling. It was a Victorian age scrapbook (very popular during that time) that was filled with all kinds of personal effects including a lock of human hair. As I thumbed through the scrapbook, I felt a very deep feeling that this was the work of a very small child perhaps a little girl. I was not uncomfortable or uneasy with the scrapbook, but for some reason I felt saddened that it had been once cherished by someone who had passed on many years before. As I was leaving my sister's house, she asked me why I was so somber and quiet. When I told her about the strange feeling I had with seeing her antiques, she laughed at me and quickly assured me that there was nothing to be concerned about. She even made a joke that something attached itself to my jacket and might follow me home. When I returned home my wife and child were already asleep and I went straight to bed. Later that night, I was awakened at precisely 4:00 AM to the sound of my daughters mobile being wound up and playing. I sat up in bed and was immediately amused because my one year old daughter had evidently learned to stand up by herself and wind the mobile. As I got up and entered her room, the mobile stopped playing and to my surprise my daughter was sound asleep. I stood there in the dark for a moment and wondered if I had dreamt the whole incident. Just as I walked away and turned the corner to the hallway, the mobile wound itself up three times again and starting playing. I bolted back into the bedroom and the thing stopped. By this time I was really starting to freak out. My heart was beating very rapidly and my mind started scanning through all of the possible explanations of what had just happened. The next morning I briefly told my wife what had happened and she did not want to believe me. I studied the mobile and could not find any way possible that the thing could wind and play itself. The turning mechanism was very stiff and required a fairly sizeable amount of energy to turn. I quickly forgot the incident, but exactly one week later at 4:00 AM I was awoken by my wife who was frantically upset. She kept telling me that the mobile was winding up and playing itself and stopped every time that she entered the room. The mobile had duplicated the same action that it had done for me a week earlier. The next day my wife and I had several discussions about what had happened and tried to arrive at some conclusion and/or explanation. I even brought up the scrapbook incident and told her about the way I felt that night. My wife did not hesitate and immediately disassembled the mobile. About a week later I took several photographs of my daughter. Being a new parent, I naturally have expended several rolls of film just on her. I took over ten shots of her in her room that day and when I had them developed we were astonished to find that two of the shots contained this gray mist. As the other photos have revealed, the blinds and curtains were closed and the only ambient light that was in the room was coming from the door. This was the first and only time that my Nikon had ever produced such an image. Since then, we are continuing to have strange things happen in our home. We hear someone walking through the house when no one is there and the door knob on our backdoor sometimes turns back and forth all by itself. My wife has woken up several times and feels the presence of a small child. At first she thought it was our daughter, but after going to her room she is always sound asleep. I am now a firm believer in ghosts and I have a whole new respect for the supernatural. There is an entity in my home and it seems to be attracted to my daughter. We do not feel threatened or harmed by the entity but we would like to attain a better understanding of how and why it is in our home. Since all of these things have transpired, I have started to question many things about my religious convictions and the very nature of the human soul. I have not been comfortable with sharing this information, but since I have visited your site, I know that there are others that have similar experiences. I appreciate any feedback or comments that you have on our experience and the picture.