As a fun thing to write, (maybe weird to some) should I make a "A Year of Naomi" (on her cycle)? Since all the hormones get out of balance and everything, and emotions come to surface. Then interactions with the brothers, especially since they're dudes who're probably not gonna know how to comfort her. It's just an idea.
Each chapter would be a month (Jan, Feb, etc). Might be a weird concept, but it's not often that a character suffers on their period and it being included into something. I know it's not quite in the book.