...and I'll remind you it's not even been a year since the girl fell of a roof.
Marilla goes up to get Anne's candle from her room.
And she finds Anne, face down in her pillows.
Nope.
"'There now, what is it?'
Anne had slid to the floor in despairing obedience."
Like how great is that turn of phrase?
So Anne's hair is green. A "queer, dull, bronzy green, with streaks here and there of the original red to heighten the ghastly effect".
Marilla says if she decided to dye her hair, she would have chosen a decent colour, at least. (Honestly Marilla a little sarcastic and all like "child, wtf" is hilarious. Honestly, how else do you react when you come home to this??? XD)
Now, Anne says she applied it using an old hair brush and combing it through, so we can figure out that it's not a dye that uses peroxide to lift the colour before depositing pigment.
(If you googl, you'll find a decent amount of people who have tried to put indigo over blonde hair and turned their hair green.)
Back in that time, people would shave flakes of it into boiling water and add herbs for shine and fragrance, but they often left the hair dull due to the film they left.
Or you would use a lye-based soap which was even harsher. Either way, you weren't washing it often.
Anne cries while Marilla is cutting, but after she decides that she'll learn a lesson about being vain from this, and look in the mirror every day until it grows out.
And they had to cut it super short, like almost to the scalp.
Poor Marilla's headaches have been getting worse and worse and she plans to see the doctor soon.
The narrative adds, "Which was Marilla's way of saying that she liked to hear it."