How to use "nerve" in a sentence

But she had lost her nerve

The nerve-fraying sound bounced off the walls of the narrow passage, echoing and re-echoing.

On the left, slot machines ran the entire length of the casino, bank after nerve-jangling bank of them, brightly and colorfully lighted, attended by gamblers who were more vocal than the card players but not as loud as the craps shooters

She felt up to the challenge now, and she intended to finish the task before she lost her nerve again.

"The nerve!"

Where were they getting their strength, their nerve, their endurance? It seemed as if they must have some advantage of which Alexander was not aware