I'm so happy that you have been able to consider the advice people have been giving you. I know it's hard when it seems like people are criticizing your belief system. From what I have read, many people have been giving excellent advice. It seems you are moving away from judgment and toward acceptance. I hope that your wife can learn by your example and you can build more accepting relationship with each other, and more importantly, the rest of the world! It is inspiring.
My back story... About 6 months before my wife and I got married I came out as an DL. She was terrified, and considered ending our relationship. It was scary for me, but that's exactly why I chose to come out then. Our relationship was strong, but we didn't have a binding commitment. I didn't want her to feel trapped once she had married me, a "freak". It's unfortunate you weren't able to come out earlier, but you seem to be handling it well.
Now for my advise... Can you encourage her to speak with a therapist? Would you consider speaking to a therapist? Do it separately, with different therapists, so that you can have an individual experience. Your therapist can help you figure out all the issues going through your mind. Her therapist can help her understand your situation in a judgment free environment. Best of all, no-one you know will ever find out! My wife and I both saw psychologists last year, and we still talk about the things we learned about ourselves. It was all covered by our insurance!
I know many Christians will prefer to speak to their pastors for guidance, but that can lead to awkward situations. Many therapists are sensitive to religious beliefs, and may even incorporate some of them into your conversations.
I still struggle with the conflict wearing diapers around my wife creates. I still feel judged sometimes. She is trying her best, and I love her more for that. I know in my heart she wants me to be happy.
I'm sorry, I won't pray for you. I will think of you and hope the best for you. You deserve it.