CoolJ:
Where so many trans-gendered MtF's error in their judgment, is if they are married, and have children, that the union is somehow going to last or weather a gender-storm. The chances of that actually happening, are slim to none, or very remote. There are some who can pull it off, but not very many.
Your wife was attracted to this particular "MALE" guy, whom she fell in love with, and wanted to be with. If she wasn't, she wouldn't have married him, and certainly wouldn't have considered having children by him, if she felt that she couldn't trust his mental stability.
The longer the marriage, the worse it will be. Why? Because you'll have a longer established history together, and everything that was a constant in her beliefs, is being ripped apart, by something she never expected in a million years. Even if HE told her in the very beginning, that he had affinities and needs to act or dress like a female, she still felt that she would be the center of your universe. She wants to be your anchor, and reason for being a faithful man to her. Now she is facing a usurper, an intruder, into her life, as well as her guy that she has loved and invested so much of her heart and soul into, disappearing before her eye's. Most women that face this; " I want to be a woman too", crisis's, will feel a deep betrayal and loss...
Way to many TS's think that the wife will learn to roll with it, if she really loves him. The would be a huge error in judgment...
You have to realize that you are taking away the very foundation of her world. Her trust, faith, love, honor, respect, will be trashed
because her husband, is going to kill off the man she married. The loss of the children's father, because of your decision to go forward with everything associated with transition and SRS, is beyond unfathomable to her. "How could you do such a thing to her, and them?", is what she will be primarily thinking.
Even if you can manage to hang onto her and the kids while you begin your journey, she'll be grieving the loss of her husband.
Likely as not, it will be more than she can bear, and she'll want to move on..and start fresh with a true man...
These words can sting, and you may say to yourself; "Well that isn't going to happen to me!" Well; you had better brace yourself for this, for in all actuality, it will. You should not hold any animosities towards her either, if she does drop the divorce bomb on you.
Her reaction would be a normal one, to any marital situation such as this...