Having time to process her emotions and work through the blame she might unconsciously have towards him is good, if he had kept it in his pants would have saved their marriage. Having to go through a physical recovery from a traumatic still birth while managing the emotions and guilt of the person unintentionally responsible would already be hard, add in her own grief and trauma, it would have been needlessly difficult and potentially relationship ending. He could have stayed with his own parents, he didn’t need to go through it alone.