Car batteries can be a bit temperamental. I once experienced a battery go dead without any prior warning on a nice summer day. An internal plate can short out and take the rest of the battery with it.
Regarding the fob, does your wife keep the fob within say 20 feet of where the car is parked? I've heard if a fob is kept near the car when parked, it's continuously communicating to the vehicle. Another possibility is if any buttons might be sticking?
Regarding the fob, does your wife keep the fob within say 20 feet of where the car is parked? I've heard if a fob is kept near the car when parked, it's continuously communicating to the vehicle. Another possibility is if any buttons might be sticking?