Melissa Gilbert is standing by her decision to defend husband Timothy Busfield after he was arrested on allegations of child sexual abuse. In a clip from her upcoming interview with Good Morning America's George Stephanopoulos, Gilbert, 61, called Busfield's arrest "the most traumatizing experience of our lives." "Our life as we knew it is done," she said. "We are grieving what we had - all of our plans, all of our dreams, all of our ideas, all of our projects. For Tim, it's done. He's canceled." She continued: "Even if he's exonerated, he will always be that guy.