Personally, while reading all the books, I felt like Donatella was the worst character out there. She was rude, and spoiled. She never listened to Scarlett, who had taken care of her for most of her life. Scarlett was right about so many things and was nothing but kind to her, and she dragged her into Caraval, AGAINST her will, lied to her, and was basically the whole reason the Fates got loose. During Finale, Donatella did nothing but whine about how Legend left her, whine about Legend not loving her, wandered around making a mess with Jacks, wandered around and made magical deals for STUPID reasons, and nothing else. Scarlett was over there dealing with shock of finding out that Fallen Star was her birth father, that she had powers, and that Fallen Star wanted to make her a Fate. Instead Donatella went looking for pointless solutions, and half of the time, while doing so, ended up pining over Legend instead. She was just so frickin useless and annoying. That's all I have to say.