Dammit, get over it.
If Casey Sheehan were alive, he'd knock you on the floor for calling his mother that name. Nobody - no sane decent person - no matter how much they disagree with their mother, would either call her that name or stand by while somebody else did. She's nutty, yes -- But you reveal yourself as an phony "supporter of the troops" -- and a lowlife - by calling the mother of a dead soldire by that loathsome name.
Casey would knock you flat, I'm sure.