My daughter is six years old and just lost her dad.

When she was two there were a couple nights she sat up in her sleep. There have been no occurrences since.

Her uncle on her dad's side was a sleepwalker in his adolescent years.

My question is: Is there a possibility my daughter could experience sleepwalking again due to grief of losing her father? If that is a possibility, is there also a possibility they could be more serious?