It's not that big of a deal to fix the cords but it's a good think your little angel was not hurt. For her own safety, I agree an xpen is in order. Maybe even 2 xpens put together. My Zoe was never a chewer, knock on wood and believe me, I thank my lucky stars! But it sounds like yours really likes to chew maybe when you are there, give her lots of things she can chew so that she gets it out of her system but until she can be trusted, your husband is right, she needs to be contained. But that being said, I do think he's gotta take a chill pill.
If he breaks your couch or puts a hole in your wall throwing a flashlight, that could wind up being a much bigger expense to fix.