It would be perfect for a teenage girl who likes ghost stories. I will admit that I prefer my horror reading to be more extreme, and I haven't been into YA books for some time. I figured I would give it a shot anyway. Here is my objective review, as opposed to a subjective one, since this isn't in my subgenre.
Immaculate writing. I couldn't find any grammatical mistakes or typos in the entire book. It was always clear, and I never found myself getting lost in words. At the same time there was plenty of description. The author used first-person POV well and never slipped into third-person or another character's POV. I didn't find one gaffe anywhere, either. These are things I look for and sniff out. It was a very clean book.
The book develops the characters very well. I could see Jess, her friends, her brother, and her mom well. Most of the time the dialogue didn't even need dialogue attribution. It was easy to tell who was talking at any time. You could tell this was set in the Midwest without even explicitly saying that. (Ya know?) I imagined Jess's mother having a thick Midwestern accent. I don't know why. Maybe it is because I grew up in Ohio. I often laughed when Jess's mother talked, but not for a bad reason. I could just hear her voice. The book did a great job developing the characters and the setting.
The book follows the story of a young teenage girl named Jess after her family moves into a different house—an old house with a secret spooky room. Without spoiling things, some unexplained things happen. She consults with her friends, and they decide to investigate when more unexplained things happen. She becomes closer to another girl, a self-proclaimed witch who has self-studied the paranormal. The new girl helps her face the "paranormal activity." The ending was a surprise.
Overall, I am surprised this is the very first work by this author because it was so well written. My only complaint was about the pacing. You could tell the author intentionally slowed the pace during important parts and sped the pace up during less important parts. There were times when the slow pace was a little too slow, and the fast pace went too fast. Most of the time, though, the pacing was perfect. Other than that, it was a great book. 4.5