@Amaterasu816 I think the biggest influence her past memories have on her is her attitude and her intelligence, as well as her work ethic and her ability to pick up new skills. She is the child of a prostitute and was horribly neglected for most of her life, yet she's very mature, intelligent, and wise beyond her years. At some point she even worries out loud that they'll spoil her rotten, to the people who are spoiling her no less. That's not something a child would even be capable of thinking about in most cases as they'll just accept the free gifts without a second thought, assuming they're not super paranoid due to a life of abuse.
Overall, I'd say it would be quite a different story without her memories as she'd likely be far more timid, easily spoiled, and she'd probably have a much harder time adjusting to the nuances of interacting with nobility.