Since I'm on the Chrono Trigger topic, Lucca is the other character I've managed to render from the initial sketch.
The changes are a bit obvious, one is to give my own spin on things and differentiate the fashion from character to character, but also to revisit what the character would look like if you gave me a verbal description. I think the lab cat makes sense, same with the bags under her eyes and a slight "mad scientist who is barely keeping it together" vibes that she has all game long.