Looking at the 2013 Weeks wholesale catalog, the mauve roses they are distributing this year are listed below.
From the the description, I think your rose is 'Fragrant Plum', but possibly 'Blue Girl'
2013 mauve roses:
Barbra Streisand
http://www.helpmefind.com/gard...
Blue Girl
http://www.helpmefind.com/rose...
Fragrant Plum
http://www.helpmefind.com/gard...
Heirloom
http://www.helpmefind.com/rose...
Royal Amethyst
http://www.helpmefind.com/gard...
I left off 'Neptune' , 'Love Song'... already mentioned ... 'Memorial Day' ... doesn't look close.
But.. a rose not listed in the 2013 catalog that does look close is 'Blue Moon'
http://www.helpmefind.com/rose..., which has been sold as 'Blue Girl' by some nurseries.
Smiles,
Lyn