If the radiator is now empty, that could explain the end of the leak.
Filling the overflow tank is not going to replenish a radiator that is dry.
Once everything is cooled down, I suggest that you remove the radiator cap and see what the level of coolant is. I suspect that you will find none.
In addition to refilling the radiator and fixing the radiator leak, I suggest that you remain vigilant for signs of a breached head gasket and for other signs of engine damage.
Driving the car home while coolant was gushing out was…not a wise thing to do. You could have caused some serious damage to the cylinder heads, cylinder walls, bearings, etc by driving a car whose engine was running very hot.