And just now at Edy’s words as a telltale flush, delicate as the faintest rosebloom, crept into her cheeks she looked so lovely in her sweet girlish shyness that of a surety God’s fair land of Ireland did not hold her equal.
There are no more uses of "telltale" in the book.
Show samples from other sources
But not before I see telltale redness in his eyes.
Sabaa Tahir -- An Ember in the Ashes
Connor waits for the telltale sting of the tranq bullet but it never comes, because the moment the bullet is fired, the boy in white takes a step back, and he’s hit in the shoulder.