Check to see if there is another junction box as part of the original can fixture, perhaps a foot inside the hole where the can reflector was mounted. If so, the hole may not be plastered over or have light fixture components mounted permanently where you could not reach inside and access what inside that second junction box.
Tornado victims: Do not rush to rebuild. Take your time and look for and get a good contractor. Or consider selling the property and moving to a home that is ready to live in.