Hand print

So it’s been months since I started seeing hands prints in the restroom mirror. 2 days ago I found a hand print in my room mirror. It doesn’t scare me just confused as where could it come from or what is it. It doesn’t look like your normal hand print, where the fingers go it’s like pointy towards the bottom. What can I do to stop this from happening? We live in a mobile home & been living here for 3 years & nothing has happened until few months back.