you're definitely supposed to find her annoying and frustrating i think, but not to the point where you hate her too much to be invested in what's happening. it frames her in a way that demonstrates her disconnection from the world around her (especially on the extended cut - and keep in mind the reason this movie was in limbo forever is because he was trying to get studios to accept a 5+ hour version lol) and it's clearly critical of her solipsism, but something i like about lonergan is he can be critical without it feeling like he doesn't care about his characters. same goes for MANCHESTER, there's some level of empathy toward affleck's character that he wants the audience to share in, but that doesn't mean he's willing to give him some unrealistic redemption or life lesson like so many indie filmmakers do, anything positive is hard earned and probably compromised in some way, and he's still for the most part an irresponsible emotionally repressed asshole at the end of the film.