Why can't Victor sleep?

You're correct. Though the poor boy cannot sleep, he can hear two men fistfighting out in the backyard.

The Lone Ranger and Tonto Fistfight in Heaven a nine year old kid cant sleep cause a bunch of dudes are having a fistfight outside...in the yard.

Sherman Alexie became an overnight literary success in 1991, when his poetry collection The Business of fancy dancing was published by an independent press. Alexie was 26 years old at the time. The English scholar James Kincaid published a positive review of the collection in The New York Times as I don't know.