The "B" World

I remember when Jathan was Brianne's age, he already knew all his ABC and more, he is just so eager to learn. On the other hand, Brianne has always shown very little interest in learning. I know she is smart and she just doesn't care. I do worry about her sometimes.
Lately, she starts to pick up a lot more. Numbers, Sharps....etc, but when it comes to her letters, she only like one, can you guess which one is it?

We always tell her "B is for Brianne.",  I guess that why she is in love with the letter "B". We have been teaching her to write her ABC and she is writing them OK but she always come back to her letter "B", as she call it her "B" world. Last week, we were in Bountiful, Utah. When Brianne saw the big letter "B" on the mountain for the Bountiful High, she was super excited and shouted at us: "mommy, daddy, we are in the "B" world. Look at the "B" on the mountain."
She is such a funny girl!