Info about my novel for my character Q&A

I wasn’t sure how much info to include, so I just kinda wrote all this. Feel free to skim or even skip any of it; do whatever you need to do to come up with some questions. Thanks in advance!

Genre: I’m not really sure, I think it’s contemporary fantasy? It takes place in modern times and has some magical elements, but the plot isn’t completely centered around the magical stuff.

Backstory: John Schilling and Daniel Bell were friends in college. John majored in English literature and Daniel majored in counseling psychology with a minor in English. They had a small business set up (against the rules, of course) in their dorm where they resold used books. One day, within a pile of donated books, they found a book that had nothing in it. It was just blank. Over the next couple of years, they discovered that the book had some pretty darn weird features. Under the right circumstances, it could alter people’s memories or create new ones altogether. But the most important power it had was that, under the right circumstances, the book could show a person what it thought the person's "purpose" in life was. John didn't care much about it, but Daniel saw the opportunities it could provide and opened a very successful counseling practice in Portland. John opened an indie bookshop in Seattle.

Exposition: Parker, Nolan, and Adria are working at the bookshop. They're on their lunch break when John is shot. Cassidy (John’s wife) tells Parker, Nolan, and Adria to move to Portland and tries (and mostly fails) to explain the above paragraph and why there's a group of people basically hunting them down.

Characters:

Parker Bell: Daniel's daughter, 17 y/o, grew up in Portland. Her mother died of breast cancer at age 8; she and her father moved to Seattle to help out with the bookshop when she was 9. Six months later, her father disappeared. John and Cassidy basically raised her. She became best friends with Adria and eventually dated Nolan, although they broke up soon after. She’s very introverted and can seem cold to other people. She often rides the ferry back and forth just for the feeling of being on the water - of listening to the wind whisper in her ear and of watching the sea foam disappear in the wake of the boat and of feeling the cold air bite her face. She rarely shows her emotions externally; she’ll never ever cry in public. She feels angry at her father because the illusion that he’s alive is easier to maintain than grieving, but on some level, she knows that she'll never see him again (or so she thinks...). Straight but usually messy black hair, brown eyes, average height and build but she tends to slouch.

Nolan Schilling: John and Cassidy's eldest child, 18 y/o, Adria’s older brother. He has always felt trapped working everyday at the bookshop. He cares a lot about his sister and will do anything for her. He loves learning and reading, especially about history. He was supposed to take over the bookshop when John retired, but he wanted go to college and explore the world; he wanted to create his own future. Now that he doesn't have a choice and is being forced to abandon his father's life work, he's surprised that he feels so conflicted about it. He also feels somewhat responsible for Parker and Adria, which just makes him feel trapped again even though he's no longer in Seattle. Dark blond hair, hazel eyes, tall.

Adria Schilling: John and Cassidy's youngest child, 15 y/o, Nolan's younger sister. She is very similar to her mother: kind and friendly. Although she is always warm to other people, she is very private when it comes to her own worries and anxieties. She feels happiest while she's sitting in front of a piano. She tends to avoid conflict wherever possible. The day of the shooting, she was in the backroom of the bookshop playing the piano. Somehow, she found herself holding the blank book. She keeps it to herself for a while but eventually shares it with Parker and Nolan and they discover, separately, what the book can do and what it has done to their parents. Curly blonde hair, blue eyes, shorter than average, looks younger than her age but acts older than it.