I highly doubt that Fox News did anything besides quote Sheehan accurately. The fact that this moonbat letter-writer is implying that she was overtly called a communist indicates, to me, that the leftists know she is not appearing well to the average American. Why else would she try to defend Sheehan against a charge that hasn't been spoken? Not to mention that the moonbats just hate being exposed for what they truly are, even if they are not being expressly labeled.
O'Reilly had some tapes of her on his radio show yesterday, where she blamed America for all the world's woes since whites first set foot on her shores. This was her attitude long before her son died in the war.