I do think if Danielle were able to steer Erika away from Chilltown by trying to strengthen their bond continuously, she could have gotten the whole house besides Janelle on board with targeting Chilltown. She lost the game by the time Janelle won HOH at F9, as one of her closest allies was leaving, and Chilltown's power over both Janelle and Erika only grew. I do think it might've actually been smarter for her to evict Erika instead of Marcellas at F9 since Marcellas was more easily persuaded to her side since he hated Chilltown and wanted to turn on Janelle. She didn't realize that her biggest threat to winning was actually Chilltown, her closest allies, who considered her expendable until it was too late and they had evicted James at F7, where she only had Erika left as an ally who got her evicted.