She told me to go wait back outside and she would call for help. One of their security guards came to wait with me until the police came. Luckily, it was the only 70 degree day in NOVEMBER! Unfortunately, not paying attention to the weather, I dressed her in fleece. She was amazingly calm, stuck there in her carseat, in an unmoving, hot van. Normally, if we're not rolling, she's not happy. But yesterday was a particularly good day for her. Good thing, because Mom wasn't calm at all, especially when I noticed she was starting to sweat while waiting for the cop to mosey his way on out of his car to fiddle with my lock. Of course, they make you sign a release, which is understandable, but I was very near the "let's just break a window, could you hurry the hell up, that's my baby in there" stage.
After 20 minutes of sweating, she was rescued, and none the worse for wear. We went on to the baby shower where she was promptly held and coddled by "aunt" Missy, then passed around for more spoiling. I think she rather enjoyed it.
Moral of the story. Have keys in hand before shutting your baby in the car. Five kids and this is the first time I've locked one of them in there.