The pictures of the fastest man in the world relaxing off the track were shared on messaging service Whatsapp by Jady Duarte and have been circulated widely online.
Local newspaper Extra reports that Duarte says that the impact of the pictures has not been good for her. She explains: "It's very negative. I never wanted to be famous, I'm dying of shame."
Duarte insisted that she just shared the pics among her friends and that she didn't expect the whole of the world to see them.
She added: "I just sent it to the group of my girlfriends, now you see...
"I just sent and said 'anyone who saw the Olympics will know who is."
Duarte says she was at the club All In in Barra in the West Zone of Rio, with friends when "Bolt spotted her". She said: "He sent a security guard to call me over. We spoke quickly.
"But at that moment I didn't know it was him, because there were many Jamaicans who looked similar."
Duarte fell short of revealing more details of what happened next - other than to say: "It was not a big deal. It was normal.
"I'd rather not talk about it - in order not to complicate matters.
"Like I said, it was normal."
It's also emerged that Bolt was allegedly briefly following Duarte on Instagram one of just 104 people he was following but that 'follow' appears to have since been deleted.