My impression is that she was counting on the nobility who were supporting their cause to be the real brains of the operation. Although King Louis is a big exception to that one!! I think she felt that Henry was stifling Hal and was being unfair to Richard with regards to Aquitaine. She also held a lot of resentment towards Henry about her own claim to Aquitaine since she was the rightful ruler but Henry didn't allow her to rule it as she saw fit. Also, I think when Henry had the Count (?) of Tolouse do homage to himself, Hal, and then Richard as an afterthought meanwhile leaving her, the rightful Duchess of the lands, completely out of it was more than an insult to her. IMO, at least from what the way the book describes it, that was the proverbial straw that broke the camel's back!
I'm loving it and have had to pull myself away from it each time!! I never read first thing in the morning but since my dog is recovering from surgery we couldn't do our morning I walk so I used the hour curl up with a cup of coffee and Devil's Brood instead! It felt downright decadent on a weekday!
