Zak G's fourth post chapters 15-18

Not much new has come up, but I do have a question about Bailey.  Why do you think that he acts so emotionally when he sees an actress that looks like his mom?  I get that he was very emotionally attached to his mom so if he really saw her but didn't get a chance to go up and talk to her then he would be very sad, but he is put off his regular happy out-going mood just because he saw someone that looked like her.  Anyways, so, Mrs. Cullinan, I don't understand how she was introduced to this story, the book seems to be getting more random every chapter, but she is a somewhat important character all the same. She seemed at first to me to be a nice person, as even her servant seems to like her, she just seems a little ignorant.  But Maya can't take it when Mrs. Cullinan starts pronouncing her name wrong, but what I don't get is why she had to go and break Mrs. Cullinan's favorite dishes, it seemed a little harsh to me just because she wanted out of the job, until Mrs. Cullinan shows her true colors and can't contain herself and almost certainty nearly kills Maya, I thought it was a little funny and a little messed up that she completely missed and hit her servant Glory in the ear, I guess Mrs. Cullinan had it coming for loosing control like that.  Then the book gets even more random and seems to have veered off the plot completely.  I don't get why it takes a whole chapter to explain why they are at a church, I would like to know your opinion on this.