<human>: Can you provide a brief overview of the text?

So we lost our kid today.  

My wife was at home, playing with our 1.5 year old daughter while I was at work.  She happened to glance out the window and saw that our neighbors were shoveling our driveway for us.  She stepped outside to thank them.

She came back in and our daughter was missing.  She wasn't in the playroom or the family room.  She wasn't in the kitchen or the gated off living room.  The gate leading upstairs was still firmly locked in place.  She wasn't in the bathroom or the garage.  She wasn't in the kitchen cabinets or the closets or behind the couch.  She wasn't in the pantry or the sunroom or laundryroom.  

Our daughter had completely disappeared in the 30 seconds that my wife's back was turned.  In our own house.  

Frantic and ready to call the police, my wife ran upstairs to get her phone...and discovered that our daughter's bedroom door was closed, which was unusual.

So she opens the door...and there's our daughter, happily playing in her bedroom.  "Hi mama!"

 Apparently our daughter figured out how to unlock the stairway gate, and then locked it back in place behind her.
<bot>: Our 1.5 year old daughter disappears in our own house.  She reappears, perfectly safe, just as my wife is about to call the police.