I'm going to do my best to explain this as plainly as possible, as I've been typing and deleting for some time now, trying to get this explained. haha Within my novel, I have two characters, originally, Ariane and Analise. The two have known each other for quite some time and are intimate friends. However, after a series of events, the two come to be known by different names - Ariane becomes Imogen, and Analise becomes Elsie. Now, my story doesn't start until well after they take on these new names. The novel is also told from multiple (first person) perspectives. My issue is this: While the story is being told from any of the other three main characters, the characters are referred to as Imogen/Immy and Elsie, in dialogue, as well as in narration. However, naturally, the two women refer to and think of one another as the names by which they originally knew each other. I feel like it would be jarring/confusing to readers to have Elsie suddenly become Analise because it's Imogen's chapter, but, at the same time, it would be unusual for her to refer to her friend, even internally, as another name than what she's always known her by. Any opinions/suggestions for how to keep the old and new coherent with the changing perspectives?