How does the author use foreshadowing in The Blue Sword?

In Chapter One, the reader comes to see that there is clearly a family secret, in that there is mention of Harry's great-grandmother and her tainting of the family bloodline. This foreshadows information about Harry's grandmother as a Hillwoman later in the novel. Harry clearly feels ill at ease in her new surroundings, but her pride and care for her brother and her new guardians lead her to behave as is expected. This duality foreshadows Harry's actions later in the novel as she is more able to explore her adventurous side.