This chapter is so relatable to artists. Even artists of old lament on how much their own art sucks, despite being able to create masterpieces that are now worth millions lol. Tbf, they're only worth millions NOW lol.
Apparently, one of the things Nightingale did was that when she lacked supplies, she would storm to the storehouse and demand them. The soldiers guarding it didn't even dare to stop her. She's that hardcore.
So her weakness is light. Meaning that instead of night on a full moon, they should have attempted during the day. Would explain why our protag attacked during the day. It's the most likely time her powers are weaken.
I legit read all her dialogue with a Bri'sh accent in my head. Thank you imagination! And English version Dragon Quest.
That said, I keep getting a cockney accent when I read her dialogue, so maybe it's better to use Flowery Elizabethian English. Make her a Shakespearean talker.