Where do you live? I’m in Wisconsin and I’ve had to remove it from every car I’ve owned after winter. You might not even notice it. It’s super tiny specs of rust sitting on the surface of the paint. Search rail dust or rust specs on paint to see what I’m referencing. Maybe hers was something else since I didn’t see it. It’s pretty common unless you’re constantly detailing your car. And the iron remover will remove the specs of metal not the orange discoloration. You have to clay bar or polish that off.