Cursed little girl

Alison lives a quiet family life in a country house. She has a loving husband and two daughters, thanks to whom she is successfully overcoming past childhood traumas. However, the idyll ends the moment Alison receives a call from her mother's assistant, informing her that her mother has cancer and only a few weeks to live.
Despite her initial hesitation, Alison goes to the hospital, where her mother asks to be taken home for her final days. Alison, who had to deal with her mother's alcoholism and cruel treatment in her childhood, is reluctant at first but eventually agrees. She hopes that she and her mother can finally find their way back to each other and reconcile.
However, after her mother's arrival, strange things begin to happen in the house. Alison soon suspects that her mother's presence and a mysterious stone she brought with her are behind all the supernatural phenomena, and decides to take matters into her own hands. How far will she have to go to protect her family?