I cant leave for too long, only because I am a worry wart. I suggest the crate. If someone can come over and let Lucy out that would be great! I read that boxers get real bored quickly and perhaps this is why lucy does what she does, I try to leave for about and hour and shut all doors, soon I shall leave for an hour and a half... and so on... Newt hasnt chewed anything as of yet, pretty soon I think they learn you will be comming home at any time and Lucy will settle down. Best of luck to you both! 
