Hi danadane,
Validation, validation and validation. First and foremost active listening is needed. Possibly during a sit-down but most likely on a continuing basis. Then for telling her anything review SET. But again - first a lot more listing.
One thing she says often is: "When are we going to talk? All you ever do is work!" or "We can never move ahead if you constantly hold on the past. You accuse me of going crazy, but you do the same things!"
Validation:
- seeing relationship problems, anger on both sides
- getting impatient
- past is hanging over us
- not being listened to
Keep in mind - none of this can be solved quickly or need to be solved right now. It just needs to be understood by you, she needs to get a sense that you heard it and it needs to be told to her as often as required - probably a lot more than once.