CL, I don't know all your story but from what I read I seriously wonder why on earth you put up with so much. Maybe your wife has some redeeming qualities but I just never read about them.
Sounds like she doesn't want a husband just a cheques book and slave.
I am sure at some point you do stand up for yourself and are not continually at her beck and call.
I would be tempted to cage the wife and give your darling pup the freedom to roam free.
A few chewed cables would be nothing to the damage your wife does.
Another 8 mths to go---you deserve a medal or certifying-lol.