'Rabbit Hole' is artful portrait of survival after loss
Objects have taken on a terrible significance for Becca and Howie Corbett, the married central characters in David Lindsay-Abaire's play "Rabbit Hole." A copy of "The Runaway Bunny" haunts a shelf like an unforgiving ghost. A favorite family videotape represents a tenuous grip on sanity. When Becca's mother happens upon a tiny pair of blue waterproof boots while cleaning out a room, Becca has to grab them and stuff t…