Honestly, I would symphathise with the mask girl about her wanting to go back home to her family and friends if she wasn't such a fucking bitch about everything.
Seriously, she hates the world she got into for no real reason other than "it's inconvenient", she doesn't cooperate with anyone without strings attached and she travels with a psycho that randomly kills people. From what I can see, she doesn't have a moral compass, she thinks like a fucking insect, she will not do anything that is morally correct if she doesn't think she'll get something out of it.