I just realized that I do have a mental image for Jehen and Yasmin (currently children in the current chapter of Ship’s Heart, the beginning of a forty-year journey, to conclude in a detective/political thriller and an interstellar heist caper ). In my dreams, the leads are cast as follows:
Quvenzhané Wallis as little Yasmin (who will grow up to be the ruling intelligence of a sentient starship)
Amandla Stenberg as little Jehen (who will be a starship captain).
Both young actors are adorable and badass in equal portion, and they light up the screen.