DISCLAIMER: All characters belong to the BBC and Sir Arthur Conan Doyle. I've just borrowed them for a while, and changed them a bit.
When Sherlock Holmes was a little girl, she got bored easily. Very easily. And when she got bored, she had fits. Eventually, because of this fact, there were no babysitters in or around London that would take care of the Holmes children.
Because of this, Mr. and Mrs. Holmes had to stop going out on Saturday nights, until their eldest child, Mycroft, had his Fifteenth birthday. They thought that was old enough for him to take care of his Eight year old sister.
As it turned out, Mycroft was the only one, besides their mother, that could calm down Sherlock when she was having one of her fits. What he couldn t do, however, was figure out how she kept getting out.
The doors and windows would be locked, the security system would be on, but still, Sherlock would get out, and manage to get back in before their parents got home. Looking no worse for wear, mind you.
They even had someone try and follow her from the yard once, but they lost her after she got through a loose board in the privacy fence, behind the garden shed.
The first time Joan Watson saw Sherlock Holmes, it was a dreary Saturday night in December. She was sitting alone in her room, as her parents were having another row, in the kitchen. She wished her sister, Harriet wasn t out at another party.
She was leaning against her window, and starting to nod off. That is, until she saw something slip through a loose board in the fence. She sat up straighter, her blonde hair sticking out, and silently observed.
The child was younger than Joan herself, and shouldn t be out alone in the dark. And especially now on someone else s property.
The child-a girl, Joan could see, with a high cheekbones and dark, curly hair- was going slowly around the perimeter of the yard. Joan opened her window.
"Hey!" She called. The child looked up. What are you doing? The girl shrugged.
"Exploring." It made Joan laughed. She was playing!
"Come here!" The blonde said. She hoped her parents wouldn't hear. The little girl did what she was told, and went up to the window. "Who are you?" Joan asked.
"Sherlock Holmes. And you?" Joan smiled.
"I'm Joan Watson" She said, as she started climbing out the window. She had to get this child back home.
A/N: So, there we go. I might add more to it, but for now I'm leaving it as it is.