Bluey books utilize simple, straightforward, and repetitive language that makes it easy for young readers to follow along while repeating important lessons. Every sentence structure is intended to be clear and understandable, and the language is selected to be easily understood by first-time readers.

In Bluey: Sleepytime, the major storyline follows Bingo, the younger sister, reflecting on her wishes to become more independent. As she falls into a deep sleep, her dreams project her goal and the support she receives from her family. The text reads: “But Bingo remembers that she wants to do a big girl sleep and wake up in her own bed”. This scene shows Bingo at a turning point in her development as she courageously decides to have "a big girl sleep." Bingo's determination is highlighted by the straightforward language and brief lines, and the phrase "big girl sleep" is memorable and understandable for young readers. The text then follows: “Bingo stands up. I have to go...I’m a big girl now.” Children are inspired to identify with Bingo's desire for independence by these relatable encouraging words. Young readers can internalize and repeat the phrase's simplicity, particularly "I'm a big girl now," which makes the experience more engaging and memorable.