Imogen has left the big city for the hometown she grew up in. She was now back to a place where people knew her. This is because when growing up Imogen had interaction with other people who can observe her and form opinions about her. What it means to know someone is to spend time with them and get to know their idiosyncrasies.
Well I would know that if I saw the paragraph but highlight the ones that most action she promotes in and 8-10 put the main idea by each paragraph.