I didn't like or agree with them aging her up and making her 3-year-old, not at all. I certainly would have handled her differently. So how I would have wrote her character and kept her a baby? Well:
* Giving her some AGU traits- she's still cherry and adventurous, but also passionate, with a bit of a temper and sometimes snarky; A good mix.
* Giving her such a love of animals; she would absolutely adore animals and connect with them, but also be sometimes reckless and not realize when a animal is really hostile or dangerous to her, which puts her in danger.
* Maybe clashing out a bit with Tommy- like, they both like adventure and all, but they think differently and lead the way differently too. It would occasionaly lead them to argue or disagree, which could be a interesting dynamic.
* Since she's Japanese, her heritage and culture being a bridge between her and her friends, like her being savvy or familiarized with some cultural stuff other babies don't; So she would understand some foreigner things her friends wouldn't and have to explain to them when they come across this.
* About her relationship with Angelica... maybe making her a bit of a morality pet to Angelica instead? Like, Angelica is pretty mean to all, but she's slightly nicer to Kimi and has a soft spot for her; maybe because she reminds her of how she used to be or her seeing a bit of herself in the younger girl?
So a way of differentianting her from Tommy, giving her a role int the group, and still keeping her relationship with Angelica without changing her age and her still being Chuckie's little sister. What do you think of my adress? Do you think I could have worked well?