A lack of communication, with horrific consequences.
She opened her bedroom door, and saw the shadow of a person in the dark on the stairs, and fired one gunshot, police say.
“He's out of town and she thinks he's far away and then somebody's coming in her house. You can't blame her in a way, it's just an awful tragedy,” said neighbor Ed Bastecki.
“When you do something like that you're thinking it's a burglar, and here it's a friend of yours. You know it's got to be devastating for the person that was shot and the person who did the shooting,” said neighbor Tom Fiden.