extreme emotion? - the bride? - nope. getting married is an emotional thing but i fail to see what this has to do with the bride's back. in addition, the picture lacks detail and a large portion of it is washed out. sorry.
To me it seems like she is about to be caged and getting her last look at freedom. I am obviously not married LoL.
IMO the sky being so blown brings the shot down. I think underexposing more to have some detail in the sky would have helped and maybe a reflector to bounce the light back onto the dress would still have left some detail for the viewer? From the bottom corner of the dress it seems like there was some nice light to be had. Hope this helps some.
I'm not getting what emotion she's feeling. Her being a bride would imply joy, but her standing alone at a window implies despair or loneliness. Other clues would have made it clearer.