There has been a trend lately (Wilderness Et al ) to portray that women if wronged in some way, percieved or otherwise, have the right to take drastic steps including homicide against their partners/husbands. The justification is that it still is a male dominated society and they wouldn't get justice from the system. The mere fact that it is the woman doing the killing, is suppossed to make the act somewhat justified and the audience are expected to empathize. Movies like this diatribe, will be forced down out collective necks till theat perception is generally acceptable.
However, on the other hand this movie tells a simple story of an emotionally vulnerable and mentally unstable person manipulated by a twisted character to harm her family. A tragedy that is much common in society. The way it tries to portray it is offensive in spirit and mediocre in craft.