Ruby's character could develop a sense of responsibility on a whole new level. Time travel comes with great power, and with that, the need to protect the timeline. She would realize that her actions in the past not only affect the past but also have far - reaching consequences for the present and future. This newfound sense of responsibility would make her more cautious in her actions and more determined to use her powers for good.
She might develop a more complex personality. Meeting different versions of characters from different times could expose her to new ideas and values. This could make her question some of her own beliefs. For example, she might meet a more cynical version of a friend from a dark future and start to wonder if her own optimism is misplaced. As a result, she could become a more nuanced character with a mix of her original traits and new understandings.
Ruby could become more self - assured. Through time travel, she would gain a broader perspective of the story's world and its history. This new knowledge would make her more confident in her decisions. For instance, if she sees how past mistakes led to certain disasters, she would be more decisive in preventing similar things from happening in the present or future.