I also think that you've done a fine job.
Only a few minor comments, I think her eyes need a little more intensity and her upper lip needs to match the colour of the lower one. The removal of some of the lines and shadow under her eye would make her look a bit less "goth".
As a personal taste, I prefer more saturated colours, especially in the hair, while still keeping the skin quite pale. Also I feel an adjustement to the direction and quality of the light on her face flatters her features more.
Since it would take far too many words to describe the difference, I did a quick retouch of my own to illustrate.
Although her skin looks a lot more "smoothed" in my example, I actually did very little cleaning up. It's the change in lighting that gives that effect.
It would take a lot of effort to remove the hair from her left eye, so I decided to leave most of it there rather than crop it as it contributes to the "waif" look.
However, this is mostly subjective and a matter of preference (and fashion) - and I'm an old fuddy duddy.