Question

In this excerpt from Anita Desai’s short story “Games at Twilight,” which lines suggest that the children had completely forgotten about Ravi?
With a whimper he burst through the crack, fell on his knees, got up, and stumbled on stiff, benumbed legs across the shadowy yard, crying heartily by the time he reached the veranda so that when he flung himself at the white pillar and bawled, “Den! Den! Den!” his voice broke with rage and pity at the disgrace of it all, and he felt himself flooded with tears and misery.

(Out on the lawn, the children stopped chanting.) They all turned to stare at him in amazement. Their faces were pale and triangular in the dusk. (The trees and bushes around them stood inky and sepulchral, spilling long shadows across them.) (They stared, wondering at his reappearance, his passion, his wild animal howling.) Their mother rose from her basket chair and came toward him, worried, annoyed, saying, “Stop it, stop it, Ravi. Don’t be a baby. Have you hurt yourself?” Seeing him attended to, the children went back to clasping their hands and chanting, “The grass is green, the rose is red. . . .”

But Ravi would not let them. He tore himself out of his mother’s grasp and pounded across the lawn into their midst, charging at them with his head lowered so that they scattered in surprise. “I won, I won, I won,” he bawled, shaking his head so that the big tears flew. “Raghu didn’t find me. I won, I won——”

(It took them a minute to grasp what he was saying,) even who he was. They had quite forgotten him. Raghu had found all the others long ago. There had been a fight about who was to be It next. It had been so fierce that their mother had emerged from her bath and made them change to another game. Then they had played another and another. (Broken mulberries from the tree and eaten them.) Helped the driver wash the car when their father returned from work. Helped the gardener water the beds till he roared at them and swore he would complain to their parents. The parents had come out, taken up their positions on the cane chairs. They had begun to play again, sing and chant. All this time no one had remembered Ravi. (Having disappeared from the scene, he had disappeared from their minds. Clean)

Answer 1

The third passage? It literally says they had forgotten him. 
"All this time no one had remembered Ravi. (Having disappeared from the scene, he had disappeared from their minds. Clean)"