Kirstie Caulker

Kirstie Caulker is one of the patients at Delphi House, she is also the daughter of Chief inspector David Caulker.

Background
Kirstie is a very friendly and light spirited girl, showing to be very caring and attentive. Based on her unusual behavior it is assumed she may have some learning issues(she might as well be a bit autistic). In certain occasions for example, she reacts very erratically, something an average person would not do.
 * Judging on how Toby hugs/restrains Kirstie -- This is usually done to prevent people from hurting themselves or others.
 * Kirstie shouts at Erica when Erica is about to walk on the carpet she was cleaning, then the cleaner explicitly tells her she can't clean alone and that she needs supervision.

Her relationship with David Caulker is not explicitly mentioned, throughout the game however, you learn that Kirstie and David have some sort of relationship (If Erica finds David before dying he'd give crumbled piece of paper which contains a drawing made by Kirstie. (This also gives the trophy Proud father, which is the only given proof they are related). Kirstie also seems really devastated when she is informed about David's death.

Present day
Kirstie spends her days at Delphi House with Hanna, Tobi and the rest of the patients. It is unclear why she is staying there. A feasible reason could be that her Dad's job keeps him busy Delphi House could take care of her while he's working. She is known to draw, an activity that she enjoys quite a lot, also stating that her favorite animal is the rabbit.

Day 1
Kirstie first meets Erica when they come across at the stairs. Kirstie shouts at Erica telling her not to step on the carpet since she recently cleaned. Kirstie would react positively if Erica chooses not to walk over the carpet. She would get upset if you walk over the carpet however.

A moments later Kirstie shows up when Hannah is having an attack and she misinterprets it, complaining they are not allowed to clean without supervision. Soon when she realizes Hannah is bleeding severly she starts to freak out. If Erica manages to Calm Kirstie down she would go get some help. If Erica fails however, Tobi would attempt to calm her down, Dr. Rosa Ballard would misinterpret the situation this and she would order the care-helpers to seize Tobi.

Later on when Kirstie Erica have lunch, Kirstie warns Erica that people are watching them so she should get fruits instead of cake. When Erica asks her who's watching them moments later, she subtlety points at the surveillance cameras. She brings Erica to a storage room and orders her to lock the door. Kirstie then proceeds to tell Erica there more than meets the eye in Delphi House. Kirstie also mentions that they come at night to spy on her when pretends to be asleep.

Day 2
Kirstie and Hannah are hanging out in the lunch room. Hanna informs Erica a package arrived for her. Kirstie starts yelling soon after when Hannah has another episode after seeing the piece of human skin that was inside of the package.

Later on Kirstie writes a feel better letter and asks Erica to sign it as well. Kirstie mentions the last patient had the same symptoms and later died. She mentions that her father told her that when the patients feel bad in Delphi House, they are taken away and shown animals to make them forget and feel better. She also admits that the know she talked to Erica about what's going on, showing Erica the tape she put in her closet was now teared apart. When Kirstie shows Erica he secret door, she tells her she must not tell anyone about the door or they would do the therapy and make her forget.

If Erica hung out with Kirstie they would arrive together to Hannah's room to only find Tobi there. She mentions Hannah is gone and she won't come back.

If Erica did not hang out with Kirstie, she would arrive after Tobi and Erica and would ask where Hannah is, Tobi would tell her she is gone and is not coming back,

Kirstie is seen a couple hours later in the night crying over the death of her father, Dr. Ballard could be seen trying to comfort her.

If Erica found the secret door by hanging out with Kirstie, Kirstie would encounter Erica once again. Kirstie cries over her father's death and that no one would protect her from being taken away and bled to the point of forgeting about her father.

When the power is down Erica meets with Kirstie once more. Kirstie begs Erica not to go, but Erica reassures her she would end things for good and also promises her she would look after her.

Kirstie's fate
Depending on what Erica did, Kirstie's story changes. Kirstie could either survive or die at the end of the game.

Shortly after Erica confronts Dr. Ballard, Kirstie would show up. If erica Did not kill Dr. Ballard by the moment Kirstie arrives, she would escape. If Erica kills Dr. Ballard however, Kirstie would show up and would ask Erica if she killed Dr. Ballard.

Kirstie rushes Erica to save Tobi when she is having an episode. If erica manages to save Tobi, Kirstie would thank Erica and would help Tobi escape the building. However, if Erica fails to save Tobi, Kirstie would cry and would tell Erica to go away.

At the end, if Erica burns down Delphi House, only if Erica managed to save Tobi, Kirstie and Tobi would meet Erica outside in the woods. On the other hand, if Erica failed to save Tobi, Kirstie would die in the fire.

Notes/Trivia

 * Although Kirstie is presented as a person with some sort of autism. When she takes Erica to a room without cameras she is shown to be smarter than she looks, proving that even she knows something is going on at Delphi House.
 * Kirstie would survive the fire only if Tobi survives.