A few progress shots ago you had more of a singed circle of grass around her, that seemed to be a great idea, clearly showing the destruction of the lands, its a bit to subtle in the current version.
As far as something in the background, perhaps just render out the shadows cast by the curvy rocks a bit more, and cast them on a few of the mid field wolves and across her as well, just get some more fun shadows going on to blend the image better.
Perhaps do a line of singed grass back towards the enemies to show she shot that way already.
I hope some of this helps, keep at it!
