I think that if you take the responsibility away from your current Hall and have your publishers cards sent to a new one you accomplish a couple of things.
The old Hall who knows you best is no longer responsible for you. The new Hall doesn't have a relationship with you............ nor would those Elder's feel responsible.
Transferring into a new Hall gives credibility that you and your wife are working through some 'issues' or looking to refresh your relationship with Jah etc.
If someone questions where you were at the last meeting or why you weren't out in service you can say that your wife likes to visit her old Hall on occasion or has a close friend and they enjoy going out in service together.
A new Hall may help your wife feel less uncomfortable about missing meetings and service as these 'friends' will not have anything to compare her with. And if your lucky they will be standoffish which can aid in fading