Hi Jayne,
I've been reading your posts in this thread and I thought I'd get on here to see if it may help to hear from someone who's wife also went through exactly what you're describing.
I'm not trans, I'm a cis woman, but my wife is, and at the beginning of our transition, she sounded very much like you, in that she didn't want it to affect me negatively or for me to leave her, or for my family to hate me, etc. In fact, some of your earlier posts from this thread sound like she could have written them 6 years ago when we first discovered she was trans. Like you, she saw herself as a freak and thought she shouldn't have ever existed.
I'm here to let you know that yes, it will impact her life, but it doesn't mean you can't get through it as a couple, especially if she's willing to make an effort, and it sounds to me like she is. I never expected for my husband to become my wife, but when she first told me, I did my best to be supportive and help her as much as I could. She didn't even start HRT for a whole year after we first talked about it, she was too scared also. You can decide that on your own time. I don't even think she actually admitted to being trans until much later either. It actually started with clothing, and over time, we discovered who "she" was. What we did, was take baby steps in exploring this new side of her, and through each chapter, we did things together and talked a lot, about how she felt, and how I felt. This change is for both of you, and you are both entitled to speak honestly to each other about your feelings. To be honest, there were days when I didn't want to hear the word "trans" or "dysphoria" or "pass" but I didn't make her feel bad about it (well, sometimes I would, accidentally, and she would tell me), or tell her not to talk to me about it; I just talked to my own therapist or wrote in my journal and processed it in my own way. However, I can say that denying yourself the chance to explore your own identity will not help your relationship, you will only isolate yourself, and your wife too.
You mentioned wanting to be diagnosed by a professional, for someone to definitively tell you "yes, you're trans", but like your therapist said, it's something you have to come to on your own. After all, it's your gender identity, only you can say who you are, no one can tell you that. And if you don't know right now, it's ok. Talk to your wife about how you're feeling, and take the time to discover yourself. Nothing has to change overnight, it's a process. I know it can feel like life is not worth living when the pressure of having to make this big decision feels like the weight of the world. But, trust me, if your wife flew halfway around the world to be with you, she really loves you and surely does want you around. And look, even if she has a hard time and isn't as accepting as you'd like her to be, it doesn't mean you should try to bury it or make it go away, like others have said, you only have one life and you don't want to get to end of it have regrets.
Life is short, and it's not worth torturing yourself with what ifs forever.
When we finally decided to go on HRT, I was pregnant with our first child. We were broke and couldn't afford to bank any of her sperm. So, we said, "I guess we'll just have the one kid, and that's fine". We had no idea that our daughter would be born with a genetic disease and would die at 27 months old, after suffering her whole life in and out of intensive care. Do I ever think back, and say "man, what if we had banked the sperm?" "what if we could go back, then we would be able to have another child" Yes, I have thought of that. But we didn't and I'm not going to torture myself over it. All I can do now is appreciate the time I had with my daughter, remember those short precious moments with her and look forward. There are plenty of children who are abandoned by their parents every day, and I would be happy to adopt one eventually. It doesn't make it hurt less, but I try to look for the positive in that experience, and now I'm an advocate for the disease that claimed her life, something I could never do if she was never sick.
Something that has helped me immensely, for both the loss of my child and dealing with the transition, has been to practice meditation. I know it probably sounds hippy-ish, but it has really helped me accept who I am, as well as everything that has happened in my life. It's so easy to give into those dark thoughts and think that I don't deserve to be alive, but when you turn your attention inward, and focus on your breathing and you practice quieting your mind, it really can make a world of difference. I don't know if you've researched alternative medicine (meditation/yoga), but if you're suffering from anxiety and depression (both of which I have), it can help calm your mind. Are there any resources near you, where you could try a meditation class? If not, there are lots of resources online too.
I've written a wall of text, I'm sorry :/
I don't know you, but reading everything you posted, it really reminded me of my wife and her struggles, so I just wanted to say that it does get better. If you and your wife can commit to open communication and love each other no matter what, I think you will eventually find peace. Or at least I hope you do.
Hugs
Elhedril
PS: you're not alone