My wife knew for some 30 years of my gender issues and even failed experiments towards transitioning only to settle on being "Just a CD". We went through much the same same phases you described when I dropped the T-Bomb on her 8 years ago. She had immense feelings of betrayal (her Hot-Button issue in life), felt lied to, and a ton of "If only......" Yet over time as we had those often very difficult, often very emotional talks, and as I began to slowly heal, she began to see that I wasn't as much of "a jerk" and soon we were even deeper in love then before.
One of the the most, if not The Most, difficult things a trans person ever does, beyond finally admitting to themselves who and what they are and to actually take on the Trans-Beast, is telling your SO. Often this step doesn't happen, the feelings stay hidden, untill a breaking point is reached or a slip up (raises hand on slip up with wife #1). We expect the Earth to open and swallow us up, or a bolt of lightning to vaporize us, a direct meteor strike, or the absolute worse, the SO running off into the night screaming never to be seen again.
One of the most difficult things for us conquer, especially older transitioners with well established life's and bonds, is the lifetime of accumulated Shame & Guilt about who and what we are. It consumes your life. You start life out lying to yourself and others and it follows you through it. It is your Go-To way to escape confrontations. Compensating for being trans I reasoned has been the "Root Cause" of many, if not all, of my major life disasters plus a good handful of others. It also leads to the "Being a Major Jerk" as you try to act like what think a normal/typical guy should.
There were many many unknowns to my wife and I as we looked at the dreams of a shared future, hopes, wishes, and dreams together come under siege. My wife asked me a ton of questions, many of which to this day the answer is the same, "I dunno". We all have dreams, fantasies, desires, needs, and wants. Some are just just fantasies. Some big questions. Some even scary to explore or even think about much less share with such an important person as an SO for fear of it being mistaken as something real or yet to become reality.
I try to be as open and honest now with my wife as possible. It was a skill I needed to learn fast during our time of crises. I worked hard on it out of love for her and the overwhelming desire to preserve "The Us" over what may be just my third time the GD getting to be hard for me to tackle and beat down on my own. Yet, even today some 8 years after dropping the T-Bomb, there are things I try to "Shield" her from. Feelings and thoughts I don't understand enough to even convey coherently. Sometimes things she cannot understand or help with, or perhaps even the center of. The sort of thoughts best explored in the safe confines of my therapists office, TG Support Group, or here on Susan's.
I'll resist the urge to understand the details behind "Found his account here..." It obviously led to his trial and pronunciation of his sentence of "Guilty as Charged". I will just beg the court to consider the extenuating circumstances and show mercy before pronouncing sentence. The defendant pronounced himself Guilty a lifetime ago. I believe "Time Served" is sufficient