No justice for the family. All because she was afraid Kirsten would tell people that she was weird? Evil bitch. It was premeditated. I don't believe the whole she keeps a knife in her car to pull veggies and fruit. That's dumb.
shareThey did show the sister using the knife to cut veggies in the car earlier in the movie.
I just think about how she stabbed someone with it, then washed it and shoved it back in the drawer. Her mother probably used it after that.
As for the sentence, I think that at the time, that was the maximum she could get as a juvenile. I believe they said something about her having to be released at 25, even if given "life".