I find her to be a very believable character, especially for someone who has gone through the kind of trauma that is inherent to being born into a post apocalyptic future.

> she is a tough girl boss from the very start and isn't fazed by things most people would freak out at

She literally sees people get hanged all the time and their corpses burned because she lives in a world where humanity is on the brink of extinction and people sometimes turn into monsters, both literally and figuratively. Death is not a thing that happens behind closed doors to her.

Her toughness is a projection, and her anger is a defense mechanism. She is a scared little girl living in a world where showing weakness is not ok.

She has a fascination will firearms because they represent the power she lacks but thinks will make her feel safe.

She has abandonment issues and so tests people by trying to push them away, hoping they won't go. She pretends she doesn't need anybody because she knows how badly she really does.

She's a much more nuanced character than you give her credit for.

Why isn't Joel's rugged blue-colar daddy type with a sorted past, but who's always right, considered to be a hack job?