Because they said she was a hero for taking out the people she considered villains aka they needed a reason to bring her back and the villains tribe was full
Apparently her edit on Gabon was very inaccurate and people generally disliked her on the island. Corinne and Randy were definitely edited as the villains of the season and they even admit themselves to being villains. With every villain you have to have a hero and Sugar was edited to be that hero.
