Neeckin said:
That's not even how slenderman works
I've had similar thoughts, although to be fair Slendy does apparently have minions/cultists in the "Marble Hornets" version.
That said, the authorities are keeping this very quiet, so the obvious questions are not being answered. For one, I haven't been able to find anything on that website that includes a ritual like this connected to Slenderman, or find any form of the mythology with such specific instructions. Secondly, the girls claim to believe the site master WAS Slenderman according to some sources.
The girls are only 12, and the big thing I have to ask is if we're accepting this "confession" what details are being used to reinforce it? If this is true, does this mean they had communication with someone over the Internet that had been telling them to do this? If they had planned this for months, and presumably had to be convinced that this was a good idea before that, we're looking at communication that could have started when they were like 10 or 11 years old.
All conspiracy theory and "weird" explanations aside, the way this seems to me is that someone convinced/conditioned a couple of impressionable girls to attempt murder, and it wouldn't be the first time things people have been convinced to do extreme things via communication online, or even through snail mail communication with prison inmates and the like. Being conditioned to kill by some weirdo online might act as a serious mitigating factor, or even absolve them of responsibility, depending on the details. They could potentially be victims even if a lot of people don't want to consider that at this point.
It occurs to me that The Authorities need to either correct people on the motives and stop seeing the online Creepypasta community blamed, if the girls did this on their own for unrelated reasons (jealousy, cheerleading, etc...), or if they are sticking to that story out the people they were in communication with since they at least share responsibility. Claiming to be Slenderman is not that site operator's usual schtick/MO so the big question is when did he claim this to them, or who did, furthermore what happened to the pasta they apparently got these instructions from, it apparently existed, and if it's disappeared or was presented as part of a "private stock" to an underage audience that does point some definite fingers.
I'm vaguely reminded of the Manson cult here, as that was based on a lot of weird sources used to brainwash he girls who committed the crimes. It came down to the belief in the Beatle's occult leanings and hidden messages in their songs that can be interpreted with instructions. Combined with a lot of Black Islam, Manson's "Helter Skelter" was basically about the impending war between blacks and whites which blacks would win, but could recover and return with preparation and by doing the right things. This is based off of Black Islam (Nation Of Thizzlam, Malcolm X, etc...) and it's belief in the ancient scientist sorcerer Yakub, who created white men as a false man to oppress the true black man, but was prophecied to fail with the black man taking his place as the world's rightful ruler after centuries, the time of which of course is approaching (if your curious that's for real, look up Yakub on Wikipedia and other sources). In this case however it seemed to be being done using internet stories, perhaps combined with conspiracy mythology that they (along with certain found footage clips) represent truth being hidden by presentation as fiction, and the proliferation of such things (found footage movies, creepypasta, etc...) so nobody will belief the truth when shown through mass media and commonplace recording.... silly... but we're talking about impressionable 10 and 11 year olds, who were probably both a bit odd to be on sites like this to begin with at their age.