Mourning's End .. When her fiance was killed in a plane crash, three days before they were to be married, Sheila Wilton's impulse was to run away from life .. and what better way than by moving in with her grand mother, a recluse living in an old house behind a high, sheltering wall? But though Sheila was through with life, it wasn't through with her. On the other side of that wall lived a young widower, Joe Lindberg, with three youngsters aged three to 14 to raise; an unsympathetic aunt doing a bad job of helping him, and a girlfriend who wanted Joe but not his children. Drawn out of her "fortress" in spite of herself by the family's problems, when Sheila thought about retreating into the past again she discovered it was too late-but was she ready to meet the future .. ? A Matter of Motivation .. Joe walked her as far as Gran's gate. "Listen," he said, "suppose I were to tell you I'm ready to break off with Judy .. ? Gosh, I never had a girl talk to me the way you just did. And I can't help wondering-" "Wondering what?" she asked icily. His grin was uncertain. "Would you have said all that .. if you didn't like me enough to want to stop me from making a mess of my life?" She looked at him very coldly. "It's your children I'm concerned about. As for your life, if you want to make a mess of it, why should I care?" "That's what I was wondering," he said.