IDK about that...I have my keys next to my cell, iPod's, in the center console, in the back seat in my bag next to my laptop (ThinkPad; made of magnesium alloy), etc etc. Never had an RFID problem. Ever. Maybe if you had a Griffin iPod transmitter from 2004 giving off static next to your cell, sure. But not the key fob.

Regardless, tell your wife to step harder on the brake from now on and see if it still happens. If it does, perhaps you have battery issues, electrical issues, comfort access issues, key fob issues, wife issues, the list goes on. I doubt it's that severe. I'd imagine it's just her not understanding that the truck needs ample pressure on the pedal.