That's what I thought was most probable. The girl's confession is curious. The terrorists may have just used one of those houses and then took off. Maybe after firing some shots off to harass them. The Marines seem to have been fired on from somewhere after they were finished in the first house. It's reported that they thought the shots came from the second house. They seem to have been firing off harassment shots and then retreated to some strong point.
Miguel Terrazas’ father, Martin, said the Marines his son fought with told him that after the car bomb exploded the Marines took a defensive position around his son’s battered vehicle. Insurgents immediately started shooting from nearby buildings, and the insurgents were using women and children as human shields, Martin said he was told.
The Marines shot back because “it was going to be them or” the insurgents, Martin said of what his son’s fellow Marines briefly described to him.
Now isn't that more in line with what we expect from Marines?
I saw the girl on tv. She didn't look very distraught but then again, living in Haditha might be dangerous and she's desensitized.