> She's 23 years old, so she's not just a teenager wallowing in her own quick ways to have fun. Yes, she's a bit hysterical and infantile, stubborn and willing to take objective risks, but she takes responsibility for her actions. So, if someone gets hurt in the process of something, she'll do something to fix it.
> What her father took care of was for her to learn how to defend herself. She is good with a submachine gun, revolvers and knives.
> Angela is clearly an adrenaline junkie, so despite her father's prohibitions, she goes out to shootouts with other gangs in New Reno.
> The Chosen One is an opportunity for her to take a break from the hardships of New Reno. They can also brighten up the time with conversations in which the Chosen One will tell Angela about how things are going in the rest of the world. With such conversations, there is an opportunity to invite her to join the journey.
> Depending on what kind of person is Chosen One, there is an opportunity to influence Angela. Either she will completely lose her mind with the same unstable and dangerous protagonist and they will turn into a couple a la Boney and Clyde, or the Chosen One will allow her to see the world from a different perspective. Maybe she could put down her inner demons, forgive her father and New Reno for all that she had to go through and become more empathetic and altruistic? Although at the same time she would retain her usual hysteria and desire to get everything she wants.