which you also repeated in your post so obviously you haven’t read as much of the book as I just have
Where did I do that?
I don't know why OP edited it, perhaps to save face after realising her initial mistake. It's interesting which assumptions we each jump to. A dog whistle to whom?
I agree with OP even if OP lied about the relationship. I've read the relevant parts and, Bonnie’s mother and aunt both have dialogue so both their accents would be heard in the audio book. It makes no sense to assume a Jamaican accent, maternal half siblings are rarely raised apart and I do believe if they'd been the same ethnicity they'd have been narrated in similar accents.
You've also read the relevant parts and instead made up a whole bunch of stuff, said it as gospel and then backtracked more frequently than me forgetting my mask in lock down. You haven't yet made a persuasive argument for why the sisters have different accents. I believe if there are any dog whistles here it is your posts.
There are not many of us mixed race or black children born in the UK that take on our family's Caribbean accents. My father didn't take on his parents' Caribbean accent and none of my cousins have taken on their parents' accents. That's not to mention any of my friends, or even my friend born in Jamaica but mostly raised in the UK. The accent you have is usually created by the area you're in, not by your family at home. That doesn't mean you can't do a very good impression of your family's accent, just that you most likely will learn to speak the way the majority of your classmates, teachers and friends do.
So please understand that even if your wild idea that Maggie was separated from her sister and raised with a Jamaican family is true (highly unlikely because the Gran seemed to be fondly remembered and part of the family until she died), Maggie probably would still not have grown to be an adult that spoke with a Jamaican accent.
Your continued effort to excuse racial stereotyping is very offensive and helps others to take an apathetic attitude to race issues. Even the little issues, when solved, can make the world a better place for everyone.