The Forgotten Niece of Sherlock Holmes

Everyone has heard of the great Sherlock Homes, some may have even heard of his brother Mycroft, but no-one knows about Adriana, I am Eliza, Adriana was my mother, now at 15 and my mother gone I am searching for my family, as which Sherlock is a great part of. And of course, what isn't a good Sherlock story without a...