Final answer:
The different names matter because they represent different roles and relationships Isabel has with different characters. The name changes are not simply based on personal preference but reflect power dynamics and ownership.
Step-by-step explanation:
The different names matter because they reflect the different roles and relationships Isabel has with various characters in the story. Each name represents a different identity or persona that Isabel assumes depending on the situation she finds herself in. For example, when she is Isabel Finch, she is under the ownership of the Locktons as a slave. Anne Lockton changing her name to 'Sal Lockton' and calling Isabel 'Girl' signifies her assertion of power and control over Isabel as her new owner. Curzon calling her 'Country' emphasizes their friendship and shared experiences as they navigate their circumstances together. It is unlikely that Anne Lockton simply preferred the sound of 'Sal Lockton' over 'Isabel Finch'. The name change can be seen as a way for Anne to both assert her ownership and distance herself from Isabel's former identity as a slave. By giving Isabel a new name, Anne is reinforcing Isabel's subordinate position and reinforcing the power dynamics in their relationship.