Only One Letter

When Annabelle learned her letters, she learned to associate each letter with a certain name/word. Occasionally I play the game where I list a bunch of things that begin with a specific letter, and the letter of the moment was K. Here was the "one letter" conversation:

Momma: K - ka (the sound of k) - Kelson; K - ka - Kelly; K - ka - Keri
Annabelle (interruptingly): No Momma. You have M. You only get one letter!