Some brands sell tall sizes for men (2 to four inches longer in the torso), but I'm not sure if they do that for women.
I have a couple of Nashbar Eco Premium jerseys that are medium tall sized because I like them to ride lower on my hips so I can reach the back pockets easier. ( I'm not as flexible as I used to be. /img/vbsmilies/smilies/redface.gif )
But, I just checked on the Nasbar website and they don't have those jerseys in womens tall sizes.
I think your best bet will be to try on jerseys where you live till you find the brand/style/model of jersey that fits you the best, and then search for the best place to buy that particular jersey whether it's locally, at one of the big on-line stores, or ebay...