Inspiration - The Grudge 2 Opening Sequence

This film as a whole was quite influential for me but the opening sequence particularly caught my eye (the opening sequence lasts up to 2.19).
The main focus of the opening sequence was to illustrate the base of what the rest of the film will be revolved around. This was quite obviously portrayed. There was no dialogue said by the protagonist, the only dialogue said was by the husband of the protagonists. The fewer the dialogue, the more the tension is built. This was visible in not only this film but many others I viewed. We also tried to keep the dialogue as less as possible, in our opening sequence, to create the atmosphere we wanted. Less speech starts to get the viewers on the 'edge of their seats' as they don't know what to expect.
In the opening sequence of this film, we see a major event occur before the film actually begins. This is quite common in horror films where an intense scene occurs immediately in the beginning of the film and leaves the viewers wanting to know why that just happened. The way the protagonist precipitously kills her husband, casually, and then gets on with her breakfast was quite humorous as well as grotesque. Once that scene ends, it fades into the title which is where the film officially begins to explain why that situation in the opening sequence took place. This is what we aspired to do by stimulating an abrupt opening sequence and have it end at a cliff-hanger.