Another entry that I can reach the ending by myself! Amazed! The light settings and animations are great. I tried to replay the game times to understand the plotline...would it be...
(spoiler)
The mother met and fell in love with a doctor who came to the town. Her three daughters were then cruelly killed by the doctor (the serial killer). The mother regretted for not being able to protect her daughters and not noticing what was wrong with the doctor. She wanted to revenge but failed, as the doctor already escaped. When FBI came, she already lost her mind (mentally broke down) and was treated in the hospital. She got trapped in her past and mixed up her memories.