The sefer uses many words that each have so much detail, starting from the very beginning. The first passuk says that Yerushaliam is "badad" alone. When we look closer at this word we see that it is mainly used in tanach in reference to tzora'at. So why is it being used here? 

          In the case of tzora'at the person who says the bad things is punished by having to be by themselves "badad" for a week. They are punished this way because they have brought it upon themselves, they did something to deserve this. Similarly we can see that Yerushaliam is punished because of what she did and she brought it upon herself. Now she needs to be alone. 

          We see from this how much meaning and expression Yirmiyaho puts into each word and each passuk which can be very hard. It's easier to express emotion when you are talking to someone in person with things like tone of voice and body language, but if you are sending a text or writing an e-mail you are limited in way of expression. We can see the extent that Yirmiyaho goes to, to get his point across and he really helps us understand and feel what is happening.