B"H everyone is okay.
There was no other car. Our Geico coverage is providing a seven-day rental. The Geico woman did not know, but at Enterprise, they said that Geico pays as I use the car, so I don't think I can retroactively pay on my United card. It's possible that Geico pays differently for other rental companies (though It may be the same), but the Enterprise is conveniently located and has been very helpful thus far so time is money.
This time, I spent $9/day for insurance. It hurt doing it, but I drove more comfortably.