My wife has been peeking at me from around corners and behind furniture. It's gone from weird to terrifying

My wife "Lynn" and I have been together for six years and married for 11 months. Our entire history together has been very normal and never once have I noticed any weird behaviors or red flags. I can't stress enough how out of character this whole thing is for her.  <br><br><br><br>Lynn is very kind, intelligent and thoughtful. She's always been the no nonsense type of person. Being childish, or trying to scare me is not something she'd normally do.