Why did your lawyer sent your wife's case to CSC and when I mean at what stage? Did her case was filed after your 485 ?
If it is a mistake then you need to call CSC and ask them status, but as per WAC# it may take another 4-6 months if it has to be approved by CSC.
Where will you send your approval letter, did anybody ask for it at CSC I guess "NO" so I think no body will entertain it.
What is your current address is it VT or CA ?
There are number of questions you need to give more details.