If this is the kid, her Amazon mom must be built like a brick shithouse. Dad too, probably.
Nah, the mom is the brick house, the dad is gonna be your typical Skinny Pencil Pusher who somehow won the love of an amazon just by being nice to her.
Human with enough force to carry lots of peoples on their shoulders... Not sure that a regular human can do that while riding something.
I guess in this series, Amazons are different enough from regular humans that they're classified as their own race. And yeah, having such big muscle from age of 6 is impossible for regular humans, no matter how much spartan training you endured.