I saw that report in the Sun online
One has to ask
a) Although Jade was said to be ring leader, was some one else pulling the strings in the background, like Adele managed to.
b) Was this a case similar to the Austrailian incident told in the film "Heavenly Creatures" where two young girls, quite normal separately, interacted in such a way as to create, in the Australian case, a composite personality that proved to be a lethal combination.
c) The testimony of her co-workers seems to show a different Jade to that one portrayed. Why ?
d) Also people do change for good or ill overtime, by being labeled as the baby of the group, could the destructive personality trait could have been resurrected, (with a little help from a certain outside influence.)
It's a hard life being a Cyber Devils Advocate, and I don't get paid enough for this thankless task 