Complex sentence: His death triggers feelings of loneliness and abandonment along with painful memories of the death of her older brother Hannes, who died during World War II. The Anton's death sends Hilde into a state of panic and despair.
Split into simpler sentences: His death triggers feelings of loneliness and abandonment along with painful memories of the death of her older brother Hannes. The absence of Anton sends Hilde into a state of panic and despair.