It's your work, and if you're happy, and the client is happy, that's what counts. Of the two additional photos, the LH image seems slightly soft, but the RH one is very nicely done.
I understand that the blown background is a popular trend today, BUT the reason that I mentioned it here was nothing to do with fashion or trends, but rather because of human behaviour. As I mentioned in my first post, the human eye is naturally drawn to the brightest areas of a photograph. If you are trying to showcase the hair, then I would suggest that you don't want want it in the middle of a distracting area (the blown sky) since that will cause it to be in competition with the sky for the viewer's attention.
I would also suggest a differnt colour top; the blue top she's wearing in the second set is ideal; notice how much more visual presence her hair has? None of it's being "lost".