Takien: The Haunted Tree.

This movie is about a young woman who lost her job and thought she lost her boyfriend, too. She decided to go back home to her family, only to find out that they were dead. Her father and younger sister were killed in a traffic accident and her mother died in the same week of natural causes. In despair and sorrow, she tried to reach out to her boyfriend in Bangkok, but to no avail. The only way to get rid of her broken heart was to kill herself, so she could be with her family.