A Quokka Dreeds its Weird

I really loved her Knowledge of Angels, a philosophical tragic fantasy about atheism and fundamentalism in a two-degrees-removed-from-our-own world--she had a gift in that for taking discussions that could have been dry and making them consequential because of how much, and how seriously, they matter to the characters, who tend to be sympathetic even when they're in tense opposition to each other. It all felt well thought-out, so now I suspect--with nearly no evidence, having never read anything else by her!--that she might have fallen into the trap here, at least, of letting holes in logic or worldbuilding slip in because she was trying to oversimplify things for a younger audience.