From Where The Crawdads Sing by Deila Owens:

After only minutes, he said, “See, you can already write a word.”

“What d’ya mean?”

“C-a-b. You can write the word cab.“

“What’s cab?” she asked. He knew not to laugh.

“Don’t worry if you don’t know it. Let’s keep going. Soon you’ll write a word you know.”

Later he said, “You’ll have to work lots more on the alphabet. It’ll take a little while to get it, but you can already read a bit. I’ll show you.” He didn’t have a grammar reader, so her first book was his dad’s copy of Aldo Leopold’s A Sand County Almanac. He pointed to the opening sentence and asked her to read it back to him. The first word was There and she had to go back to the alphabet and practice the sound of each letter, but he was patient, explaining the special sound of th, and when she finally said it, she threw her arms up and laughed. Beaming, he watched her.

Slowly, she unraveled each word of the sentence: “There are some who can live without wild things, and some who cannot.”

“Oh,” she said. “Oh.”

“You can read, Kya. There will never be a time again when you can’t read.”

“It ain’t just that.” She spoke almost in a whisper. “I wadn’t aware that words could hold so much. I didn’t know a sentence could be so full.”

He smiled. “That’s a very good sentence. Not all words hold that much.”