Interesting that you all attempt to deflect the main points being made by focussing on the differences as you see it (presumably based on your own experiences because you know little of mine) between a relationship between sisters and wider family. So for anyone still in any doubt as to what I think:
I find the notion that you can assess a person's true personality and motives, and the complexities of their familial relationships, via witness statements taken by police for a murder trial incredibly misguided especially in light of the fact that you have never met the person.
I find it surprising that apparently intelligent people think it acceptable to publish their ill-conceived and ill-informed opinions on a public website where the subject of their vilification is likely to at least become aware of them if they don't see them themselves.
I'm sorry if that seems blunt but I feel quite strongly about it.
That said, I completely agree with the excellent post that Vic made on another thread in which he pointed out the fact that whilst all this is good forum fodder it will never make it past first base in a court, and so I will go back to ignoring it as I usually do.