Flone, called Becca in the English adaptation, is the spirited middle child and sole daughter of the Robinson family, added to diversify a narrative originally devoid of female perspectives. She balances tomboyish vigor with princess daydreams, scaling trees and exploring with a perpetual flower adorning her hair, her youthful freckles captured in detailed illustrations.

Eager for kangaroos, she embraces the family’s move to Australia until learning their maid Marie cannot accompany them. Shipwrecked on a volcanic island by a storm, Flone dives into survival tasks, uncovering warm underground springs in a cave. Her curiosity sparks a connection with TamTam, an Aboriginal Australian orphan, bridging cultural divides through shared gardens and animal tending, softening tensions rooted in his traumatic past.

Protective of her younger brother Jack, she confronts jackals and misguided influences, occasionally bending rules yet upholding the family’s unity. Her keen observations anchor the narrative, detailing struggles like shelter-building and interpersonal strife.

A turning point arrives when she stumbles upon a cave skeleton—later identified as castaway Eric Bates—whose diary exposes the island’s lonely history, sharpening her grasp of mortality. As volcanic threats spur evacuation, she insists on including TamTom in their escape, championing inclusivity. Resettling in Australia, she nurtures bonds with TamTom and Emily, a shipwreck survivor pursuing medical training.

Though over a year passes, Flone’s appearance remains unchanged. Her role persists as a bridge between her family and the island’s secrets, tempering impulsivity with dawning responsibility.