Dinner Table conversation

Somehow our dinner table conversation got to the idea of which letters are the most used. The participants: Parents and three girls aged 11, 8 and 6.

Okay, we all know that the most commonly used letter is "E", what do you think is the second most common letter?

The girls shot out guesses;

"A", nope!

"S", no...etc.

Finally, Dahlia shot out, "T"? Yes!

Surenna:

"That's Not True"!