I saw that replay, too. I didn't see anything wrong in what she said--as you point out, she was simply quoting the Marine's opinion, and he didn't even necessarily call Murtha a coward: he was just making a declarative (and accurate) statement. But the Democrats have made a fine art out of misconstruing someone's words into a perceived offense and trying to profit from it politically.
"But the Democrats have made a fine art out of misconstruing someone's words into a perceived offense"
Exactly. All in an effort to shut up their opposition. Who cares what the Democrats think?