Guards of the Shadowlands

About
Guards of the Shadowlands is a trilogy by Sarah Fine about Lela Santos, a girl who tries to find her best friend who killed herself and ended up in Hell. No one willingly walks through the Suicide Gates, into a place smothered in darkness and infested with depraved creatures. But Lela isn't just anyone – she's determined to save her best friend's soul, even if it means sacrificing her eternal afterlife.