The Last Rung on the Ladder
King, Stephen
Larry lived in Hemingford Home, Nebraska, and saved his young sisters life by piling hay under her while she hung on to the top rung of a broken ladder. When she fell, she landed in the hay, breaking her fall.
Kitty had 2 failed marriages, and had lost close contact with her brother and shortly after sending Larry a postcard with a short note she committed suicide by jumping off a building in L.A.