The woman was cursed because she found out that her husband is having an affair and to get back at him she killed her children.
What kind of storyline is this. To take revenge on husband why would you kill your children.
Just cause the writer wanted to bring a weeping woman he came up with this storyline.
Anyways apart from that the acting is good.
Although its not so scary (girls too didnt get scared).
If you really want to watch the movie then watch it in 4DX.