That was what I loved the most about the movie. To me, it was the story of the fascination those boys had for those girls. Though their eyes, the girls were misterious and ethereal. They didn't belong in this world.
Those are very tough questions.
I think Cecilia needed psyquiatric help or support. Apparently, there were no reasons for her suicide, but she tried more than once and she succeded the second time. I can only think she had a psychological problem that needed help.
I can't blame anyone. I can't blame the girls' parents because they weren't looking to hurt their daughters. They were very strict but they thought that was in the girls' best interest. They made mistakes, but I think they didn't mean to hurt the girls.
That's also something I like about the movie: we don't have the good and the bad guys. People make mistakes and their mistakes have consequences, but I couldn't really blame them because their hearts were in the right place.