Kate is still just trying to keep her head above water here. She's raising the kids, working and trying to keep it all together. She is trying to balance everything.
This chapter selection begins with a trial that is going on inside of Kate's head. The "others" that are her judge and jury are really herself. It's a really harsh judgment of herself as a mother. I don't think Kate's a bad mother. I think she's having a hard time finding middle ground. She is stuggling with society's view of what a woman's place is supposed to be. I believe there is more to being a mother than mothering. Does that make sense?
I really like the way the author introduces other characters with glimpses into their experiences and how it relates to Kate's experience.