Thoughts
Borderline has some great examples of 2-level worldbuilding. Her voice is always hoarse. Why? From the screaming. Why? Because she was
raised by fey.
And it's like, okay. That's the character. That's the worldbuilding. We don't get, and we don't need, a traumatic flashback or a detailed explanation. I have a ton of questions but they're technicalities. I don't dare ask why a third time.