We don't think it will be easy or inexpensive. There will be court filings and maybe an appearance before a judge, at least one time . The facility will not allow you to go into civil court for a divorce. Our advise is to wait until you both are released.
https://www.inmateaid.com/ask-the-inmate/can-an-inmate-married-to-another-inmate-in-a-separate-hail-get-a-divorce#answer
Accepted Answer Date Created: June 03,2016