Somewhere, on the long road that wound through those four years, the girl with her sachet and dancing slippers had slipped away and there was left a woman with sharp green eyes, who counted pennies and turned her hands to many menial tasks, a woman to whom nothing was left from the wreckage except the indestructible red earth on which she stood.
There are no more uses of "indestructible" in the book.
Show samples from other sources
When the fear takes over, use the only thing more powerful, more indestructible, to fight it: your spirit.
Sabaa Tahir -- An Ember in the Ashes
"Nick, don’t let one good turn make you feel indestructible," Go said.