you might want to check out the maude character in the movie harold and maude.
yes to maude!
So, considering the few biographic details you included about a life lived on the margins of illegality, I would suggest that you might want to look at some of the stuff Crimethinc. has produced over the years. In particular, I am thinking of the books Expect Resistance and Evasion*, though the stuff they wrote in the publication Harbinger might also be of use. This is especially true if the novella is set in North America.I would also echo what Yosemite said about reading through different questions, answers and comments on this site. I really appreciate the ways in which different personalities come through in our conversations.I would also be careful to avoid having this anarchist be such just because it is an interesting plot point. What are the choices they make based upon their anarchism? Are there places where living their life means compromising those ideals?What led this person to anarchy? Was there a formative moment that led them to it, or are they someone who found the label and it fit who they already were? Are they active in explicitly anarchist groups and projects, or do they prefer to carve out a niche where thy can live as they desire (these aren't mutually exclusive)?*I don't think I have suggested that anyone read Evasion since it came out in book form, and I have serious qualms about doing so here for a number of reasons both personal and related to the way that that book influenced the larger anarchist scene of the early 00's, but I think it might actually be a useful tool in the context of this question.