Helios~~
I'm glad things seem to have resolved for you. I came on these boards after your initial post and had not made my way to it yet, so I'm still going to weigh in my two cents' worth here just in case someone else with our same issue ever reads this.
Your initial situation is very similar to what I'm experiencing with my wife, Dana, who is MtF pre-hormones and surgery. She is unable to initiate the physical transition at this time due to work, and as a result, is very depressed. She's on anti-depressants, but they don't seem to be working. I am almost positive that it's the depression and fatigue that kill her libido (the therapist and doctor concur), but there's still a lot of fear in me that this is just the beginning of the end for us. I wonder if it's me to whom she's not attracted anymore. I wonder if she will move to a place where she would rather have a non-autistic, slimmer, non-anxious, single-gendered person as a partner. I wonder if she will move to a place where she would rather have a genetic male as a partner. But she assures me (and on my good days I believe her) that it is my soul and inner person to whom she is attracted and Loves. She swears that will never change.
I think the reason it is so hard for me to feel more secure in her Love for me is that physical touch seems to be my main love language. And more than that, I seem to be hard-wired to equate physical touch with depth of affection. That is, I feel closer to friends who are willing to hug me--and hug me good!--than those who won't. I also crave sex from a biochemical level. I understand the hormones involved, and one of them, oxytocin, is very important for people with autism because adding it to the system can help with anxiety and trust issues. I also understand that there is a separate bonding process when the chemicals of a genetic female and a genetic male have sex. Dana is long past the point of wanting or being capable of having sex as a male without it destroying part of her soul, so I know that latter ship has sailed. But I still get a good oxytocin buzz with what sex we do have as well as feeling, as you say, "cherished." It's very, very hard for me to live in this deprived state (sex every few months, if that) and not wonder about the future of our relationship.
To counter this emptiness, I try filling it with one or more of the following thoughts:
1. Dana *does* Love me and shows it to me in many other ways: cuddling, kisses (though not passionate ones), hugs, doing stuff around the house, making me feel as safe as possible, and, most importantly, pulling on that drab uniform and going off to work every day. (I mean drab in the Shakespearean sense of "dressed as a boy".)
2. Don't take it personally. This is a mantra from the book The Four Agreements, and it reminds me that her lack of libido has everything to do with *HER* bio-chemistry and state of mind and nothing to do with me.
3. Dana told me when she first came out that she didn't even know who she is, let alone who she might Love. She did eventually say that she still Loves me and wants to be with me. I need to put a little faith in that decision and that it came from her soul.
4. She is, by definition, in transition. The caterpillar Loved me. The cocoon Loves me. I just have to wait and see what the butterfly will do.
I don't know if this will help anyone else, but it's what I do to try to stay sane. I am heartened by the fact that when we do have sex, it's still all glorious and hot and making Love, the way I always want it to be. Frequency aside, it's pretty good stuff. I just need to try to be what I've never been very good at being: patient.

Best of luck to anyone on this journey. It's a hard one, but hopefully, a very rewarding one.
~~E