The fact that...
...the media chose to run with with it, without checking the ammo at all for consistency with US weapons and ammo seems like obvious anti-US propaganda to me.
The ammo looks like cheap Chinese ammo, not even good enough to be Soviet-bloc stuff. I'd say it got their via Iran and the woman is "in bed" by choice - or threatened by someone - who is fighting a propaganda war, by day and a member of the Iranian armed insurgency by night.
The reason they probably didn't bother to gather US ammo, is because they know the journalists embedded in the region are on their side and won't question their statements.
But I'm very cynical...
;-)