Since her left eye looked good (had 'sparkle') and she was pretty much looking at the camera, one possibility would be to:
* Use Lasso to select around left eye
* Ctrl + J - layer via copy
* Ctrl + T - free transform
* Right-click inside rectangle and choose 'Flip Horizontal'
* Drag / position over R eye and press Enter to accept
* Add layer mask and airbrush with black on mask to blend it in. See left side
* Levels or curves adjustment layer and lighten image overall
* Ctrl + I to invert mask
* Airbrush on the adjustment layer mask around eyes with white this time to apply the lighten effect on them only
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While I understand the reason for the man's arm in the pic, it was distracting to me, so I removed it!
Impressionist plugin for the arty effect.