Whoever this mystery girl is, she was right to be afraid: Rosita doesn't even know her and hearing that she didn't have a reaction to being bitten makes her eyes sharpen significantly. Immunity is unheard of, back home. Everyone has it, everyone can be turned by it, everyone will be turned by it.

If someone were immune, god knows how anyone would react.

"Tends to be, when something no one else survives or has a cure for ends up not affecting someone. World's a different place between hope and no hope." Her voice is stiff, even hard, when she says it.

"It's nice when you get a choice to be away from it. I'm glad you have that."