Piperka

Hole centers on 27 year old Jane Nowak who is forced to confront her tumultuous past when the ghost of her childhood best friend/rival Asenath "Nat" White begins to torment her. As the haunting takes its toll on Jane, forcing her deeper into a spiral that affects her performance at her job and tanking her mental health, she must relive the trauma of what happened between her and Nat in high school and the bodies left in their wake.

A horror webcomic with a sapphic bent, and not the other way around, readers are encouraged to check out the content guide for warnings if there are any topics they're particularly sensitive about, as it is updated at the start of every chapter. That said, this comic does deal with concepts of death and abuse pretty heavily, and features some pretty graphic depictions of gore and violence.