I suck

When I went to drive carpool this morning, I found my battery dead and my car inoperable. I had left the keys in the car, and I assume I hadn't turned the ignition all the way off. My husband is out-of-town (although it wouldn't matter, b/c I wouldn't be able to fit everyone in his car, anyway). I had to call my cohort in carpooling and have her come back to get both her kids and mine. And where was she when I called? Heading to shul to say kaddish for her recently deceased father. I feel like such a heel. And an absent-minded idiot.