Nyad was very swollen from multiple stings to her face and body, said Vanessa Linsley, who worked on Nyad's team.
"She's pissed. Nobody blames her. There isn't anything that can change this ... there's nothing that has to do with your swimming capabilities. You can't control mother nature," Linsley said.
Nyad attempted the same swim last month, but had to quit after a serious asthma attack made it difficult to breathe. On her website, her "Xtreme Dream Team" reports Nyad was philosophical:
From the water, she called out to her flotilla of four escort boats and addressed each of them in a strong voice. "The medical team said I should not go another two nights in the water and risk additional likely Man-of-War stings which could have a long term cumulative effect on my body. But for each of us, isn't life about determining your own finish line? This journey has always been about reaching your own other shore no matter what it is, and that dream continues."