Yes, I've done that. Been there and done that. And forever after, I've kept a spare key in my bill fold AND one single key in each pair of pants or skirt or jacket I wear. Just in case.
We think WE have troubles?
Not too long ago I was in a crowded parking lot of a big shopping center, in a pounding rain storm. I was sitting there with the heater on, waiting for a lull in the storm. Right next to me a young woman with a baby in arms and a toddler took the kids out of the car still running car, shut the back door and turned to go get her coat from the front but her toddler "helped" her by pushing shut the door, which for some reason was locked!!! Coat, cell phone, car keys in running car...
Of course I put her and kids in my car and loaned her my cell, but after calling her DH she started crying. It had been the absolute last straw in a bazaar day she said started early in the am with the baby crying, her spilling the diaper pail over the floor, etc and a lot more of that, escalating into this parking lot.
I told her DH to take her home and watch the kids while she had a long soak in a warm bath, which he declared he would do.