Use pictures of death......!
I'll beat her to the punch. Here's a shot of Kurds dead in the street following a gas attack; what could happen if Saddam is allowed to continue manufacturing chemical weapons.
Other video suggestions would be the horrors of 9.11, Daniel Pearle or other decapitation videos, etc.
She's on the wrong side of the fence if that's the way she wants to go ("it's going to be bodybags and then everyone in America will be sorry").
I heard that crap in Gulf War I. Some alternarocker used sound bites of former President Bush saying "It's not going to be another Vietnam" while some sad music played, this was PRIOR to any battle.
The left wants us to have a tough time so that they can preach "see I told you so".
They obstruct this nation and stand with our enemies purely on the basis of politics and party.