Scarlett as a Politician

Scarlett started a campaign to improve the relations with the local islanders by providing them with carefully crafted job opportunities in tourism. This was great for her public image and led to her being invited by Black to discuss her potential political endorsement in his oil drilling plans.
However, Scarlett found out about Blacks plans to build the massive oil rig, which would undo all her hard work. Perhaps she couldn't take the blow to her public image and decided to end it then and there?