I had two in HS and one in college when I came out to them and the world. Like you, I was outwardly showing signs and doing what I could to appease my urge to transition. Self medicating HRT, wearing what I wanted whenever I could get away with it, etc. So, when I called a family meeting around the kitchen island and told them, they all kept saying "Well, that makes sense!". Because they had picked up on the signs. One of them struggled with it because he did not want to lose his Dad. I could totally understand that, too. I told him I am the same person he has always known, and will do the same things I always did with him. None of that was changing. I was the one that was going to change; not him. It took a few months, but he totally got it. All 3 of mine are totally fine with it now. My wife and I are still married, and she had the exact same fears your wife did about the kids. Exact same. We decided to pull the plug one day after talking with my therapist together. Sooooo glad we did it when we did.