She has nightmares about monsters.
She does not want to be in the same bedroom with her sister.
.She sees something scary in her room at night.
She does not think anyone will care.
She is too afraid.
She knows her parents are in the next room.
She is sleeping.
She is too young to have such feelings.
She has more courage.
She figures out that the noise and light are caused by everyday things.
Both happen at night.
She realizes that both experiences occur because of passing cars.
"If I spoke of it, it would kill me."
"Even at two she composed herself attractively for sleep."
"I lay alone and was almost asleep when the thing entered the room by flattening itself against the open door and sliding in."
She tries to scare her sister with the mystery.
She explains it to her parents, and they all laugh.
She is never afraid again.
To create a feeling of fear.
To create a feeling of boredom.
To create a feeling of humor.
The author spend much of her childhood driving in cars.
The author spend most of her childhood too frightened to sleep well at night.
.The author lived near a road and shared a room with her younger sister.