
Written for the juvenile mid-20th century sci-fi market, the story focuses on relationships between family members, friends, and enemies. Podkayne, a human girl born on Mars, has the opportunity to travel to Terra with her Uncle and her younger brother. She learns about good and evil, trust and betrayal, and, of course, about herself.
https://en.wikipedia.org/wiki/Podkayne_of_Mars
I quite enjoyed it at the time, and I think Lowe is about as old as me...
Robert Heinlein "Podkayne of Mars","Tunnel in the Sky", or "Beyond this Horizon"
Samuel Delany "Babel-17" or "The Einstein Intersection"
Roger Zelazny "Lord of Light"
And, of course, there was the Oz books.
Podkayne of Mars is often taken to be one of Heinlein's juvenile novels (based on the story) but that was not his intent, and he said the "moral" was aimed at adults.
Heinlein also explored that possibility a bit in one of his juveniles — in the novel, the tank farms were called "creches."
