How does the author use foreshadowing in Black Beauty?

Here we have two characters that, although still in some ways caring and efficient, have major flaws in the caretaking, flaws which cause significant harm to the horses under their care. Their failures and flaws foreshadow the even greater harm of the following section. Black Beauty’s journey from idyllic childhood to hard adulthood shifts gradually, and this point marks the beginning of Beauty’s difficult times.