SO...........
I am mtf and have been married a very long time......decades. Surviving this transition this past year, and getting on with our lives, including enjoying all the things we like to do as a couple, including a mutually satisfying sex life requires absolute honesty, trust, and love. I must admit, it sounds like your partner may not be TS. Then again, maybe she is. Therapy is definitely in order for hir, as well as you, and perhaps together. My heart goes out to you, but as Gill said, 'Life really is too short to spend it miserably'.