Shirly Jackson wrote some scary stuff. You’ve probably hear of The Lottery; it seems like that was required reading in school for many of us. It’s definitely creepy.
Why not try her novel We Have Always Lived in the Castle? Mary Katherine (Merricat) Blackwood is the first-person narrator; she is eighteen according to Wikipedia but gives the impression of being much younger, and lives with her sister and her old, ailing uncle in a gradually deteriorating house. The Blackwoods are ostracized by residents of their small village due to events well in the past, and they make do – until their cousin Charles arrives to disrupt their lives as he tries to take over the household.
Read the book, or watch the 2009 movie on Netflix. Spooky.