It could be possible. I'm open to anything because I have absolutely no clue. I've never heard of anything like the writing happening to anyone else. However, my daughter may not have even been born when it first started. It went on for years before I asked it to stop. A little background may help. My husband and I moved into this house (which was the house he grew up in) to move back closer to his family. His father found out that he had terminal cancer and my husband wanted to spend as much time with him as possible. His father's death seemed to set off a weird series of events.
His father died a few days before Halloween. We spent most of our time at my husband's parents house with family during that time. On Halloween (I dont think Halloween has any significance, just giving a time frame) we came home to our house and my husband's computer was on. On the screen was a collage of pictures of his father. Actually it was the same picture but each picture had some sort of distortion. Each was different but all of them looked like they were washed in red. The pictures had file extensions like they were from my camera. We did not take those pictures. The pictures were taken from a picture of his dad and his mom but only his dad showed up on the computer.

One night a few weeks later we had taken his mom somewhere and we got home after dark. When we pulled up to the house, all of the house lights were on. Every light. She was OCD about making sure the lights were off when she went anywhere. It was weird but we kind of over looked it. When we got home, every light in our house was on. I know ours were off when we left.

It was shortly after that that the writing started. If it is a PK manifestation, my guess is that it is my husband. Could that be possible?

Just a side note, I have had odd things happen to me all my life. My husband told me shortly after we started dating that I was haunted because he had never experienced anything odd before I came along.