Well, first of all, I don’t know what he did that was so wrong - or at least, any different from what she did in giving the various interviews and statements she has about the RF.
But even if that were the case, you would think that if things were as rosy as she portrayed via The Tig, she might want to put those feelings aside in the circumstances.
Unless there is more to that complicated relationship than meets the eye, and the Tig was all a big fib, now is not the time to hold grudges. Isn’t that what people keep saying about the King with Harry?