to get rid of the green in her hair mix 2 tables spoons of photographers hypo (sodium thiosulfate, available online from many retailers, including walmart and amazon and sometimes sold in pool stores as 'chlorine neutralizer') and 2 teaspoons of citric acid (Sometimes available in the grocery spice section as 'sour salt or with the home canning supplies) a cup of warm water and pour through the damp hair. Let sit until green is gone (usually less than a minute). Rinse well, shampoo twice, and then condition. Besides knowing a lot about pool chemistry I am still licenced as both a cosmetologist and barber and worked many years as a colorist so getting rid of copper green hair is something I've done often!