Whoops- the babysitter showed up!

My mom and I decided we would start working out in the mornings, two days a week. So I asked a girl from church if she would start coming over so we can go exercise at our church fitness center. I remembered yesterday that my mom was going to be gone this week, so I called the babysitter to leave a message to not come. Well the answering machine messed up and I could not leave a message. So this morning at 10:00am, as I sit in my pajamas, she shows up! I paid her for her time and told her next week! Is that what you call "mommy brain"?