Bethany had liked Miles because he made her laugh. He makes me laugh, too. Miles figured that digging up Bethany's grave, even that would've made her laugh. Bethany had had a great laugh, which went up and up, like a clarinetist on an escalator. It wasn't annoying. It had been delightful, if you liked that kind of laugh. It would have made Bethany laugh that Miles Googled “grave digging” in order to educate himself. He read an Edgar Allan Poe story. He watched several relevant episodes of Buffy The Vampire Slayer, and he bought Vicks®VapoRub™, which you were supposed to apply under your nose.