I honestly think that Charlie doesn't differ that much from Vaggi. There's a very common criticism of Vaggi's character that she lives off Charlie's dreams and that her only purpose is to do whatever it takes to make her happy and her dream reality.
However, not everyone understands or realizes that Charlie is actually the same in terms of her dreams. Charlie wants to redeem sinners, make hell another version of heaven, a good place without death, violence and sadness. She basically solely constantly relentlessly selflessly lives and perceives herself through other people. She thinks that she can't exist if others are not happy, it's just more abstract and altruistic than Vaggi's (no hate to her, just facts). I hope Charlie can and will be capable also develop her own dreams, goals that do not center other people, I know that the main purpose is to make Lilith proud but still she's too kind to pursue a singing, acting, theatrical career in hell's other 6 rings where she is seen more as a princess of hell and respected.