for me i already said that i don't think the girls r always innocent n all clean. its both side's equal fault. the murderers r wrong so r most of these girls.
there should be some sort of counselling for problem, rebellious kids. most kids start showing pattern behaviour at young age which becomes serious as they grow n find more freedom. since sometimes ppl find them too contrained by law in discipling these kids they end up making extreme choices. There was a thread here a 14 yrs dating a 11 yrs. now if the parents of these kids will try to stop them these kids will resist to their most. Obviously they can't disown them. Social services will get involved, relatives won't be quite. So they'll keep on solving the issue with their best resources.Now not all end up killing them but some might depending on their own personal strengths and core values.
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No it's not both sides fault. Children tend to make mistakes and disobey. No matter how bad they are it doesn't justify killing them. the ones who endup killing them aren't normal people.