You silly little girl you don't know what you talking about.

You're to young to understand.

She is sick and tired of hearing these things. She does know what she's talking about.

She gathered all the information she could.
She listened when no one thought she was

You silly little girl is no longer called silly little girl, because she lit everyone's words on fire burning the tips of there tongues
With all the information she had gathered she was the little girl who knew everything.