Question about the Tantas

BIG SPOILER................................

Just beat the game and realized something. It was noted that Cinta was the last one to succumb to Susurrus. And yet she is the only one that seemed to transform into a beast. Granted all of the Tantas were "beasts" in their own right. And they all went mad as a result of Susurrus. But why was Cinta the one that transformed into a dragon? Wouldn't it stand to reason that she would be the one with most human like form as the last one to fall?