Best of the four books

I grew up with the Shiver series, reading the first book when I was in middle school and 13? 15? years old. Maggie Stiefvater has a world-weary, noir writing style. Having done no Google snooping into her background, I wonder if Isobel's tumulteous homelife and Cole's cynical world-weariness are close to what Stiefvater's life was when she was young. From all the books I read when I was young, Stiefvater's books and the Sweep series (YA fiction about wiccans, cannot be found on Storytel or Audible as far as I know) stand out in my memories. The rest faded into the grey sludge of long term memory.