Call the Midwife-slash-Locksmith

A one-year-old and a 4-month-old?

Whoa, you might want to slow down, Fertile Myrtle!

You realize that a 1-year-old could be 19 months older than a 4-months-old?

I do. I'm close in age to my little brother. Fortunately, my mom slowed down before she had our sister.

Spare key hidden outside.... and not under a rock.

Of course they were crying/screaming ! Their mommy was suddenly gone! Though I'm guessing it was fine in the end ;)

As a mother, and having years of experience in hospitals, this post terrified me. I've seen so many devastating cases where the mom was only distracted for a few minutes and the worst happened. I would have been breaking windows or anything to get back to kids that young and unattended IMMEDIATELY. I'm sure since you posted this, all is good and well thankfully! Being a mom is hard, kids are sneaky and can turn everything upside down in seconds for even the most diligent parent!