Bottom of the page, click on "find a member" then type in the member name. Or, you can just click on the member name in an active comment to go to their home page and click "block this member" top right corner.
I'll make it easy for you. Here's the link to her page: http://www.listia.com/profile/8386795
The white Nike needs to reach 50,000 credits in bids before I can offer free shipping. But if you were to win both auction, and the white Nike still hasn't reach 50,000, I'll cover for 1/2 the shipping cost. Both shoes will weight around 7-8lbs and its going to be expensive on the shipping.