I think she is stuck in the anger phase of grieving. When she is done with this phase (and it may take years) she will still have to go through the painful, hopeless grieving phase — she is avoiding it like the plague.
Hadn't thought about it that way but it sure makes sense. As long as she's busy, she can hold it at bay, but during the "quiet times" it takes over.
I have been through that sequence...as I'm sure many of us have.
Now I'm feeling sorry for her....I can think of nothing more devastating than losing one of your children. But her "in your face...blame anyone and everyone" attitude turned me off and she walked right into "sock-puppet-hood" for the left, doing more damage than good.