I think they released that info maybe to show the public that even though AGT hasn't entered a plea - that they have more than enough evidence to convict him of her murder and to place her inside his car (video cameras, credible witnesses, etc) whether she got in "willingly" (tbh I don't think she got in willingly without a threat) or against her will.
I also don't think that AGT and Sierra knew of each other "online". AGT doesn't strike me as computer savvy person and I think her tumblr page would be difficult to find (her username was a different/off spelling of her real name) and I don't think it was linked off her Facebook page - from what I've noticed a lot of people on tumblr like to keep their tumblr page unlinked from their FB page almost as if tumblr is their personal rants/raves blog or online diary where who cares if random people see but as long as not random people from school - unless her closer friends had tumblrs and they were all "following each other" which is normal I think.
I just hope stuff Sierra had online won't be used against her by AGTs defense. Yeah, Sierra was only 15 and by judging her online activity seems she was not necessarily into but maybe interested or wanted to seem "cool" and like the kind of girl who would be into partying,drinking,sex,drugs and whatever. Many of the images she posted had already been reblogged thousands of times on similar blogs of girls around Sierras age. Sierra seemed into fashion and makeup and many girls follow lots of fashion type "aesthetic" blogs where thematic images are posted to go along with a general "feeling/style" on the blog. I think a lot of maybe parents on WS were very shocked and thought that was "abnormal" for a girl Sierras age and I guess what I'm trying to say is its pretty normal I think - most parents are totally in the dark with what their children do online and should probably be more aware. IDK what I'm trying to say I'm just babbling but it would be unfair for Sierra to be blamed for "enticing creeps" or posting thematic things, posting photos of herself, etc - doesn't mean she deserves to be kidnapped and murdered - if the defense goes that route?
Also an apology in my last posts in this thread - yes I want justice to be served fairly and it would be awful for both families if they "had the wrong guy" but IMO they have the right guy, he was surveillanced for weeks and eventually charged, I don't think they would have charged him without enough evidence that Sierra is no longer alive and evidence she was in his car before she died.
Where is Sierra?