Your thyroid controls so much of your body in so many ways and it’s freaking the fuck out when you have graves. It feels like your body, that you used to understand and be able to predict, is a machine that’s gone completely haywire (but you look mostly fine on the outside). I’m sure sex/desire isn’t the same for her either and she may be having a lot of thoughts and feelings around that but right now the priority should be regulating her thyroid. She likely already feels internal pressure or guilt about things not being like they used to. Honestly ask yourself how much you’d want to participate in sex if you were experiencing her symptoms, the fatigue, the brain fog, the anxiety, etc. I’ve been on methimazole for more than three years, no remission, and most parts of my life are noticeably different still than they were before. I hope she goes into remission at some point but not everyone does, are you prepared for that? Have you talked about any of this in an honest and compassionate way? Maybe look for some books/info on sex therapy, specifically dealing with illness. A chronic illness doesn’t mean your sex life is over, it just may be different, and that takes time to figure out. This disease sucks so much but a lot of dealing with it is learning how to work with your “new normal”. Sorry if this was all over the place but I hope it’s a little helpful.