>>11406038
I wouldn't call her an 'innocent background character,' but I think you've got the right idea.
She's very passive and gentle, not very emotive. She's very devoted to (You), very helpful and dedicated. She's isolated in a very safe place in a very dangerous world. All this plays into her being good prey. Fire Keeper starts to scream for the first and last time in her life as she's eaten alive, crying out for her hero that's nowhere to be fun, suddenly exposed to the dangers of the world and gobbled up by it mercilessly. Like, forget screaming, she's probably never even been scared before.
Although, now that I think about it, I'm pretty sure she's blind, which isn't great for vore...