So, when I tried to Match Color the hair of our actress with the original image, the new hair came out way too dark. So, it occurred too me that I should adjust the brightness of our actress's hair to match the hair in the original image before trying to Match Color. I'm guessing this should be done in Curves. I'm trying to figure out how.
Remember that the wig of the original photo is quite different than that of the one your actress is using. The original wig seems to have had light blonde streaks. I would like to see where you are with the project. Keep us in the loop.