E.V. & Rome

Written in a diary style, alternating chapters between E.V. and her counterpart Rome. Although this does lead to some repetition, in this case, that is good as we see how each of them reacts in similar situations. As oldies (well me anyway) we can get an idea of how to help and support them.
This book is fictional but the Author informs us early on that every thing included really did happen. So it leads me to wonder, is E.V. the author? and who was Rome?