The next two weeks were filled with joy and happiness for Charlotte. Happiness that she never felt before.
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"Yes John I adopted a child."

Charlotte smiled, still not used to the fact that she got adopted.

"Yes."

"YES. I. ADOPTED. A. CHILD. STOP ACTING SURPRISED," Sherlock snapped on the end of the line.

"She's my assistant."

"For the cases of course."

Sherlock suddenly frowned.

"But-"

"Jawwwwnnn," he moaned in annoyance, "I don't care if she's four or five or whatever, she's older than she acts!"

He rolled his eyes and hung up while John was mid sentence.

"You're going to visit John," Sherlock suddenly turned towards Charlotte with his jacket already on, "I'm visiting your parents."

Charlotte winced at the thought of her parents. Not just what they meant to her. But the idea of those type of people existing.

"Doesn't he have a daughter," Charlotte wrote on a piece of paper.

"This is getting ridiculous. I'm not going to beat you for speaking Charlotte."

Charlotte then pointed at the question on the paper multiple times.

"Ugh yes," he nodded, "she's at school."

Charlotte smiled. It's not that she didn't like other children. It's just they made her nervous.

She should talk to her new therapist about that.

If she would talk that is.

Carrying her music theory books that she got at the library two days ago with Sherlock and listening to Chopin, Charlotte found herself in John's car.

"He's a very nice man," she thought, "no wonder Sherlock's friends with him. That and he carries a gun around."

"Would you like to go to the music store," John quickly asked while stopping at a stop light.

Charlotte nodded excitedly.

As they turned in, Charlotte nearly jumped out of the car, her little legs carrying her quickly to the music store.

That's when she saw it.

The cello.

She had heard song after song on the cello, even read music theory to learn how to play it. But she never in her life ever saw one.

"Would you like to try it," the store manager asked.

Charlotte nodded slowly.

Next thing she knew, her eyes were closed and her fingers swept off the strings, beautiful but sad notes from Adagio by Bach soon played and she smiled like she hadn't smiled before.

Meanwhile, John recorded the whole thing.

"Presenting Charlotte Lise Holmes: Musical Genius?"

That was the headline for one of the news stations on the telly.

Another one was, "Sherlock now raising a fellow genius."

Apparently John's post titled, "Charlotte Lise (after the physicist) Holmes plays cello for the first time," went viral on his blog. And for once, John was happy he caught one of Mary's unshakable habits.

And since Lise was technically his niece now, he bought the cello for her.

And that's when all the reporters kept coming.

Day after day she practiced, much to Sherlock's happiness, which came along with reporters scrambling for a recording or a picture.

Because they soon realized this:

The famous Sherlock Holmes has a successor.