Sherlock Holmes is your father. He doesn't always act like one, more like he treats you like one of his best friends, letting you in on his cases. He didn't care how old you were, even when you were merely 7 he carried you to the crime scene. He and Watson raised you like that. You woke up on the armchair surronded by papers. One was on your head. Sherlock was already up and going, brainstorming the case. He took the paper that was on your head and ruffled your hair. Now ignoring you again.