A Story about a Silly Mistake

I made one of those marvelously humbling mistakes on today. I locked my friend's keys into her car. Not my keys into my car. Her keys into her car.

Here's what happened.

Her son says to me, "Will you help me with this door?" I try the passenger door and it won't open. I open the driver's door to see if the side door is locked, meanwhile noticing her keys on the driver's seat. I try the locking mechanism in the wrong direction. As he explains to me that he just remembered the passenger door doesn't open like it's supposed to, I let go of the door and it closes. A moment too late I realize my mistake.

I was fairly devastated. She told me not to worry about it. I can't help it. I do, though maybe worry isn't the right word for what I do. The worst thing about it all though is that I suspect I'm doing something wrong in not doing what she asks when she asks me not to worry about it.