Francesca played extremely well given the tools she had at her disposal. Francesca made emotional bonds with her tribe-mates, and connected well with the vast majority of them. It could be argued that Francesca's extremely complex, highly applaudable social game is the very reason as to why she was given the dubious honour of being the only person to be voted out of the game of Survivor first, twice.
Francesca absolutely dominated the very early stages of both her seasons, and if given just a few more days on the island, she most definitely would have been able to create an army to take down her opponents as she paved her path to the final tribal council.
We've never seen a player like Francesca before. She's one of a kind. We have seen so much development and growth in her character, and viewing her seasons comes so tragically as we begin to respect her gameplay that much more on each rewatch.