What is the meaning of this sentence from Sadie by Courtney Summers?
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I am reading sadie by Courtney Summers, and there is this sentence in this book that I do not understand the meaning of can someone please help me in this? Here is the reference Paragraph: I want to live my life on the internet. Everything is perfect there. I found Kendall Baker on a computer in a library in some forgettable town along the way. She's beautiful. A girl with a glow. Eighteen years old, but the kind of eighteen they write about in books. The kind of eighteen that lives faster than the speed of hurt. I want to specifically understand what does Courtney Summers mean by this sentence: The kind of eighteen that lives faster than the speed of hurt. here is a link to paragraph: link.
meaning meaning-in-context
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