Whoever made this movie tried to minimize the sick behavior the mom has towards her daughter, even making light of it at the end. They expose a bigger ill coming from someone else, as if that justified or erased the mother's wrong doings. This isn't healthy behavior, it's not funny and it happens in real life. Overprotective moms who stalk their sons or daughters and basically ruin their lives.
You think the movie will be about exactly that, because of the title. But the title is just there to catch the viewer's attention, it doesn't do justice to the topic of the movie. It could have, but they deviated from the main subject. They clearly tried to create cohesion at the end but then during the rest of the movie they deviated from it.
What's worse, is she's made out to be some sort of victim and perhaps even a heroine when she's far from it. She could have shown some sort of remorse for destroying a whole family, but she didn't. The movie's hard to watch because of all the elements that were toppled on top of the other.
I love watching movies, especially those with dramatic suspense like these ones, but this was too much.