80s Ghosts by VS Lawrence:
 
The year is 2009, and Chrissy Rodriguez is determined to make her ghost hunting vlog an internet success. She’s only one more failed investigation away from financial ruin and having to move back home. When she receives an email asking her to investigate Merlin High, a school that burned down in the 80s, she is presented with a unique opportunity that could make or break her.

As they explore the decaying halls searching for evidence of the paranormal, Chrissy notices that her team is acting a little…off. Everything begins to unravel, blurring the lines between past and present. With her team stretched to its limits, Chrissy realizes that some secrets want to be found. And some of them have even been waiting.