When Elizabeth rejected Mr Collins in Pride & Prejudice he turned to her best friend Charlotte. We do get a glimpse of her married life in P&P but this is her (supposed) story. It‘s possible to read this without reading P&P; the few relevant details are filled in. I always start Austen continuations with a healthy dose of scepticism but apart from questioning Mr Collins‘s height and first name, which I don‘t remember from P&P, it‘s good.