Last Rung on the Ladder

It's about a brother and sister who in their youth used to play a game. The game was to climb high up in the barn on an old ladder, then fearlessly throw themselves out into the air… just to land way, way below in the haystack. On one occasion the ladder brakes and the sister is stuck way up in the air, hanging onto the last rung on the ladder. The brother then moves enough hay to save her from breaking every bone in her body, or even worse getting killed. Years later when they are older the sister jumps from a building and kills herself.