The last word meaning explaining yourself yet again. You have already explained yourself to her. There is no need to do it again.
I used to work for a couple. The W would explain her side seven different ways and yet say the same thing over and over ad nauseum. Because of dealing with her, I learned that I wanted to do the same with my W... Say the same things over and over but worded differently whilst secretly hoping I would stumble across the magic words that would change her mind. Learning from other people's pain I have learned that these words do not exist in any known language that our WASs will ever understand.
Dignity. Integrity. These are what you are going to need to show her. I believe you have it in you.
“Things turn out best for the people who make the best out of the way things turn out” ― Art Linkletter