So.... slave.
Nova wasn't a freedom fighter. She was a piece of ass among a people who had been debased for eons. CAutionLIveaniMAls crashed down a long time ago in that world, not 13 years ago.
And that goes for the original book in French (which was dope, in spite of its separate issues with being a product of its times), and the Heston movies. These stories have agendas and warnings in all versions.
If they're truncating the time the non-humans had to be on top of the food chain after overthrowing the sapiens who abused them, that's missing the point of both the movie source material and the novel source material.
Why would the producers do that?
Little girl can be Nova's ancestor, abducted into slavery on some Stockholm shyt, but absolutely NOT Nova herself.