The characters felt fairly well drawn and distinct -- with the four main ones, I felt like I had a decent understanding of their personalities.
There was also a good amount of description -- in some cases, I felt like there was more than I needed (almost every noun has an adjective), but it helped to visualize the situations and I didn't feel lost or confused about where the action was taking place.
I guess my biggest issue was that it seemed pretty low-stakes and, for lack of a better word, domestic normality. I was going to say that there wasn't really conflict but I think that's not technically true -- Brooklyn's desire to ditch school is conflict, it just didn't seem very important (to him or anyone else).
Brooklyn doesn't want to go to school (and pays $40 to skip it) but when he ends up going anyway, he doesn't act too put out.
When Brenda hits him with her belt, that -- at least -- seemed to be her taking things seriously, but she's talked out of it almost instantly by Kaira and seems fine afterward.
Brooklyn doesn't like getting hit, but he's pretty much fine a paragraph later.
I was thinking that Brenda would miss her online test to take him to school, but that didn't seem to be an issue either (I didn't understand why).
I thought that maybe in part 2, Brenda would read Kaysen the riot act, but she seemed pretty okay with it, responding to the idea that someone (Kaysen) who was old enough to drive was going to conspire with her middle-school kid to lie about ditching school with a "warm smile" directed at the two boys (Is Kaysen a child? I didn't think so, but it was hard for me to get a grip on his age).
Overall, I guess it was less a lack of conflict, that kept me at arm's length and more of me wondering, "if none of these people care about what's happening to them, why should I?"