My friend...... I see you type this, but the rest of your post is you doing the opposite.
I'm not trying to give you a hard time here. Sending her emails like this is more of the same.
Yes, it's good to remember positive change is essential in all of this, but also remember her issues go much deeper. This isn't all about you, or what you did or didn't do.
Yes you are changing, be confident in that. You don't need to keep informing her of this. She will notice it in time.
Keep your focus on you and the kids. If I remember correctly your D is old enough to where you should leave it up to your wife mend their relationship.
Right now your wife is in an emotional tornado and with her distorted way of thinking you and your old relationship are the cause. The more you get caught up in it, the more you feed it.