Cthulhu Britannica: London - The Journal of Neve Selcibuc

Neve is an American amateur sleuth who has been sent to stay with her Aunt and Uncle near London. While she has a whole other adventure of her own (as described in her journal), involving a fishy-looking man and an even fishier statue, it’s the events that she finds herself involved in June, 1925 that most closely concern the campaign. It is here that she is given a strange artefact taken from the Temple of Nabu, at which point she finds herself too far out of her depth and is forced to turn to others for help.

Of course, if you are running The Curse of Nineveh, it is the investigators in your party to whom she turns...

-> http://cubicle7.co.uk/using-the-curse-of-nineveh-and-the-journals-together/