Looking For Esmerelda

While reading through reseach online I found that thier is a posibility that Esmerelda Lock(e) who was a Shropshire Gypsy was painted by Rossetti while in Edinburgh, I have found a couple of pieces about this and hope to come up with an image, I have emailed the Birmingham Gallery which has a collection of Pre Raph work of its own and has some from Tate aswell at the moment, in the hope of finding an answer.