it sounds like you believe the water is from the overflowing toilet that you have cleaned up. I would go further and investigate it from the bottom to see if there is any wet insulation. You may be able to determine if there is insulation under the floor by simply pushing your finger up against the covering under the trailer and see if you hit solid wood or if there is some give. Anything wet will need to be cut out and removed or it will cause rot.
After it is all dried out I would fill the black tank until it's full and see if there are any leaks. If nothing leaks then drain the tank and go about your life.