I agree, there is too much sky. Still, I wouldn't crop it that tight but give her a bit of breathing space. Also, by doing so the Rule of Thirds starts to work and in this case I think that would make a better photograph. I also removed some of the sepia. Personal likes and dislikes of course... Here's my edit:
A good lesson for the OP. I see it as a strong vertical portrait. To me the eyes fit the rules of thirds. To levinader the line of the body fits the rule of thirds. Two shooters editing makes for two different view--even when we agree on the basics.



