Ok, then does little wife sound any better to you?
And really, you want to focus in on that instead of supporting the fact that slave driving poly couples are not the norm. Sure if you've got the whole Dom/sub thing going and thats your bag.
At least in our household our (girlfriend, little wife, unicorn, significant other) is treated as an equal in all matters.
Which means there is hope for the damsel in distress if she hasn't gotten a bad taste in her mouth at this point for the poly lifestyle.
Bad luck is better than no luck at all.