Hey there Mad frog - Has she had her thyroid checked - and checked again? I went through a bad period of low drive when my thyroid problems were bad. Didn't really like being touched because my body physically felt so horrible and uncomfortable. Was tired all the time and lacking in motivation. Figured we'd just slog through it and never understood how badly it was hurting my H when I turned him down.
Some things that might help in your sitch - 1) fully support your W in her efforts to get medical help. This is an area we know little about, but she had a normal drive before, she should be able to again, it may just take a whole lot of persistence, maybe by you doing research with her, going with her to the doctor's, not making it HER problem that SHE has to fix but OUR problem that WE want to fix may help.
2)Figure out how to shower love in her love language (read The Five Love Languages by Chapman). The more loved you make her feel, the better she'll feel about sex.
3) Quit criticizing her and start telling her all the things you appreciate about her, all the ways she is beautiful to you, etc.
4) AFTER you have been doing number 3 for a while - than go to her, in a quiet moment, and tell her how rejected and unnattractive you feel when she rejects you sexually. (I never imagined my H could think I thought he was unnattractive!!)
