They couldn't sink it. It's still floating and they left a warning for other ships. That was posted in an article this weekend.
So, it really wasn't as dangerous as they are making it out to be. If she was that safe, then why not risk the attempt?
Besides, you say it was only the 'reality tv show' which prompted her to do this.
Here are HER OWN WORDS.
"It has been my dream since I was 13 years old and began single-handing, to one day sail solo around the world. I am 16 years old and this blog will contain the story of my attempt to become the world's youngest solo circumnavigator. "
Maybe we could get a B-2 bomber to do a flyover and do our part in the 'clean up'.