Angie (CofD)
Angie is a teenager being treated at the Warren Whalen Mental Asylum.
Overview
Likely suffering from paranoia and schizophrenia, Angie was taken to the asylum after stabbing through her little brother’s cheek with a letter opener. Familiar with both Steven Young and Tracy, she tried to warn Young after the latter’s death, which Manning saw as being a murder.
By some unknown means, Angie is aware of the asylum’s administration, a shadowy group of supernatural beings keeping the staff and patients both trapped in the facility for reasons unknown.
Speculation
It is possible that Angie is actually Angela Manning, the woman who replaces Young after he confronted the administration and was admitted as a patient. If this is the case, it is likely the effect of the “maze” which could not be escaped without “[coming] out the other side”.