"It's always the mother, isn't it"
Briggs's jail cell speech about the injustices faced by humans and "half-breeds" in Lunathion gets me every time (I listened to it twice) it was such a powerful commentary on both race and gender dynamics in mixed race relationships/children (like myself). The social power imbalance that inevitably exists when one partner is of the race in power and the other isn't (especially when it's the woman), and the dissonance it creates for the children in weighing different parts of their heritage and identifying more with one than the other, the struggle to treat them equally, especially when so much also depends on the relationship with each parent, the way you were raised, where you were raised.
I find it really interesting and relatable to delve into Bryce's past and the things she's done or her parents have done to ensure she has access to both parts of her identity, even if they are not of that culture themselves (like going to the oracle).
I don't really see Bryce as identifying fully with one or the other, human or fae, which I think is also really realistic - it's really hard to pass as fully one or the other when you're mixed. Rather than live amongst the fae or human society she lives in the old square where it's a mix of different cultures including ones that she is completely distinct from (shifters, sprites, fauns), thereby bypassing that issue altogether.