Spouse refuses to sign divorce papers, what is the next step?

Both parties agree to a divorce, but wife refuses to sign without legal paperwork stating how much money she will receive from my retirement. I work for the USPS and have hired an attorney to retrieve this info. Being a government business, it is impossible to receive that info due to the variances of the stock market which is where most of the money is put into, and it depends on when I retire. She does not understand this and refuses to sign. What is my next step? Can we go in front of a judge? How long do you have to wait?