My child locked herself in by accident

She slammed the door and locked herself in my bedroom.
I was totally panic but called a neighbor, a very nice, handy guy.
It took him 10 seconds to pick the lock open.
My baby pooped her pants and wanted to get out badly.
Other wise it'll be worse. She might climb onto furniture and fall or drown in toilet.
Tots like practicing acts like hide and seek, inappropriate and dangerous for her age.