Now may not be the time to say this, QT, but she was telling you she was unhappy, you didn't take it seriously, she decides to be done trying to get you to take her seriously, then you say "let's work on this" and she is supposed to just say "sure", because you are ready?
It's just not the way it works. And maybe one day she will be ready to. You weren't ready when she was and she is not ready now that you are.
I hear ya, it does s*ck that the decision by the one person changes everyones lives, I agree.
It's easy to say how each spouse should have acted in the marriage. This is your reality right now. You can grieve, be mad, do what you need to do. And when you are ready, own your stuff, and she could own hers. Just keep going on your path.