That's true, especially when it comes to Zidane. He had his relationship with the Tantalus group but the truth around him doesn't really surface until disc 3. But what I meant was, these characters actively do things to change their fate. Even Vivi or Quina, who may seem a bit more timid and scared, begin to break away from Zidane very quickly and recognize they're overdependent on him. Dagger never does that. She loses herself without him and that's a serious flaw in her character. I could never associate with her.
However I do recognize that it is her past that's very tightly connected to the game's story and she may also be the perfect example for your article.