This edit, sorry to say so, darksyde, is just too dark. It does not work at all, I'm afraid.
Yes, the original version is overexposed and sports that lens flare, but I do agree in that this was a moment that could not be missed, her smile is ever so engaging and I do love the highlighted hair. I like it so much, I don't mind in the least that those parts no longer have any detail.
Since I like this photo very much, and since you say OK to edit, I thought I'd love to give it a try:
In my ancient PS 6.0, I pushed up the non-existing shadow levels for the overall picture until the lever reached "the mountain". After that I threw a lasso feathered at 20px round your girl and again pushed the (once more non-existing) shadow levels until I reached "the mountain".
(If you don't have Photoshop, this might not mean much to you, I don't know what pp software you use and if that software can show you the histogramme of the original photo? It is the illustration of the histogramme that I am referring to).