My parents threatened to raise my rent unless I was my sister’s free nanny; they didn’t know I’d vanish overnight, leaving them drowning in the mess.

My parents threatened to raise my rent unless I became my sister’s free nanny. What they didn’t expect was that I would quietly leave—and let them deal with the chaos they had created.
Things had been simple enough until my older sister, Martha, came back into the picture.

Martha is 32, and there’s really no polite way to say this: responsibility has never been her strongest quality.