This girl is somewhat of a phenomenon. I saw a tv special on her a few months ago. She's got sponsorships out the ying-yang. I'm not so sure that she needs donations, but I'm sure she could use cards and letters encouraging her to keep surfing. In one article I read, her father said she is "back and forth" on whether or not she'll keep going.
Here's a page where you can get more info on her:
http://www.hanaleisurf.com/surf_team.htm
Be sure to check the video of her surfing.