In this paper I describe a delayed reaction to sibling-loss in a woman patient who had decided to start a family. She began to have unexplained panic attacks after making the decision to have a baby. In analysis it gradually became apparent that these panic attacks were a delayed reaction to the trauma of the loss of her baby brother when she was 16 years old. Recovery of her feelings about the death of her brother led to a gradual resolution of her symptoms and to her successfully being able to have her own baby. It also led to a marked increase in her creativity and to greater satisfactions in personal relationships. The unmourned nature of the death of her brother had had a deadening effect on her feelings including her own maternal feelings and procreative capacity.