Hi Kassie,
Yes, it can be shortened, but you'll have to decide where to put the new edge. I think it would be best to shorten it past the motif at the train's end, but quite a shame to loose that beautiful design element that you paid a good amount for. I think it would look odd to shorten it in the middle of that motif.
You do have more options than shortening the train. You can also bustle it, either all the way up or to just shorten the train a little. I have done this for brides with your concerns. A French bustle like this dress would look very natural.
~Lea