In the giver why didn't Jonas share the incident involving the apple with his family at the telling of feelings session that evening?

I think he didn't share the incident involving the Apple that evening because his family already knew because of the announcement that was previously made.

"ATTENTION THIS IS A REMINDER TO MALE ELEVENS THAT OBJECTS ARE NOT TO BE REMOVED FROM THE RECREATION AREA AND THAT SNACKS ARE TO BE EATEN, NOT HOARDED"

Then right after it says

"No one had mentioned it, not even his parents, because the public announcement had been sufficient to produce the appropriate remorse."