We tried to be firm in our correction...to emphasis that she was never ever to cut anyones hair again. She was so pleased with herself though that it was hard not to smile.
I'm a bit sad that her hair is now a little wonky but she is as proud as punch. I've caught her admiring her handwork in the mirror several times and if you ask her what happened she will smile and tell you "I cut bangs!".
She pulls it off I guess - still crazy adorable ;)