Simply, the element repeated is the redundancy of the characters' name.
<span>Papa says to stay inside the gate. Papa goes away for something. Little Daughter looks through the gate. Little Daughter picks flowers.
The redundancy of their names here creates an escalating rhythm. It builds up tension in the sentences. If you notice, the writer didn't use pronouns to refer the characters. He used proper nouns each sentence and successfully created a strong tension.
If he wrote: </span>Papa says to stay inside the gate. He goes away for something. Little Daughter looks through the gate. She picks flowers.
It loses the tension, rhythm, and power of the sentences as a whole.
The excess of their names here makes a raising rhythm. It develops strain in the sentences. The author didn't utilize pronouns to allude the characters. He utilized proper nouns, places or things each sentence and effectively made a solid pressure.
