I haven't been able to get any specific dates on the separation and filing for divorce scenario, but it looks to me from the contents of this article...

http://news.yahoo.com/s/ap/20050813/ap_on_re_us/peace_mom

...that she and her husband had separated as a result of the stress arising from Casey's death, and that it happened before she started camping out near the Bush ranch.

So that would make at least one of tar_heel's "facts" more vicious gossip than "fact". This does seem to be the pattern of the people who are criticizing her. Use vicious gossip, inuendo, slurs and invective in an attempt to bring her down because morally and ethically, they don't have a leg to stand on.