Brake Grinding Noise problems of the 2014 Ford Fusion Hybrid

My wife was traveling down a local road (5 lanes) and speed limit 40 mph getting into the center left turn lane, there were three additional cars in front of her. She was probably doing about 15 mph at most and began to depress the brake pedal when she experienced what we subsequently learned is called a "hard stop/hard brake" - this is when the electronic brakes fail and the manual brakes take over. Luckily, she is a very cautious driver and not prone to quick stops. The car slowed and finally came to a halt without hitting the car in front of her after she depressed the brake twice. It is very probable that she did not depress really far down not being aware of how the manual brakes are supposed to take over if the electronic brakes fail. She subsequently began to experience a low-grade clicking/grinding noise when she would have the brake pedal depressed after being at a complete stop. She took the car into the Ford dealership for immediate examination. She has been told that the dealership had to order a new abs module. The fear for her is what would cause such a failure so early in the life cycle of the car (12,000 miles) plus if it is a problem with the abs module is it a design flaw in module and will it continue to happy of the lifespan of the car.