How we cite our quotes: (Chapter.Paragraph)
Quote #1
The memory of the funeral made Kendra shiver […] The Larsens were the grandparents who had been part of her life. They had shared many holidays and long visits. (1.27)
Kendra feels close to her grandparents on the Larsen side, which is one of the reasons she doesn't remember their funeral with joy (that and because she's not a bad person). This also serves to highlight the fact that she doesn't know the Sorenson grandparents very well (hence not looking forward to the visit).
Quote #2
"She has been trapped in that shack ever since, held captive by the knots in the rope you saw. Let her story serve as another warning—you have no business in those woods." (5.182)
Thanks, Grandpa, for this history lesson about Muriel turning into an evil witch and being imprisoned for a long shmooping time. It has such a nice moral about how you're not supposed to mess with magical stuff you don't understand, or else there could be serious consequences (though it's not like Seth is gonna listen anyway).
Quote #3
"Mortality is a totally different state of being. You become more aware of time. I was absolutely content as a naiad. I lived in an unchanging state for what must have been many millennia, never thinking of the future or the past, always looking for amusement, always finding it. Almost no self-awareness." (6.40)
Lena can compare and contrast the mortal and the naiad perspectives on time, since she's lived on both sides. Humans are apparently really aware of the passage of time and their relationship to the past, while naiads don't have a clue—but then they don't really need to, since they're more or less immortal. It's kind of like comparing apples and oranges when we think about it this way.