My first thoughts were along similar lines to Manfred. Good idea but not quite getting full potential impact at the moment. However, I wouldn't give up on this scene.
Possibly with some selective editing, fractionally increase the foreground brightness to boost the footprint contrast and if you can't get her in focus, how about adding more blur? And tone down the highlights on her clothing.
Having her slightly more distant with a couple more paces of footprints may have worked better, but too late now.
As well as Venser's comments, there are a couple of other very small bright spots on the sand.