The maker of sub offers a program for those who qualify if you want the info let me know and I will send it to you.
I don't live in TN, but most states have some public assistance that could help. How long has your fiance been on suboxone and what is her dose? Would this be an opportunity to taper off the suboxone? There are a lot of members here, so I hope that someone who lives closer to you can help.