Toyota Repair Problems? Ask a Mechanic for Answers ASAP
What part of the country does she live in?
I am afraid they are probably correct. The rust and salt corrosion can cause leaks on the tank and the lines going to the tank. The filler neck that goes down to the tank to fill the car up is known to rust out also. The body may not be that bad put underneath the car is more susceptible to rusting.