I think it's horrible to put a kid through this. Most know ahead of time if a kid can/will want to do it or not. A child's mental world is small to us big huge to them. Not worth it.
However, she will look back and laugh at herself. Good capture.
I'm sure she will really want to do it again the next time she gets asked to be a flower girl......some adults are just idiots for forcing children to do things that they obviously don't want to do..........