The family of a 79-year-old woman who was fatally struck by a Tesla in Simi Valley broke silence on Wednesday, remembering her as an amazing mother and grandmother as well as a great wife to her husband of 56 years. Police said Ginny Shields of Agoura Hills was on a sidewalk when the Tesla jumped a curb and crashed into a cafe. Her son, Steve Shields, spoke to NBC Los Angeles exclusively and described her as a devoted mother and grandmother. “Sh…