These info are not true, just random troll thread that coincided:
Apparently after she killed her friend, she posted some images and comments on 2chan:
Mostly pictures of her bloodied hand. If you don't like blood then it's NSFW, else, it's just pics of bloodied hand.
http://i.imgur.com/hTlGl1f.jpg
http://i.imgur.com/S8xXX50.jpg
http://i.imgur.com/aJRCOfL.jpg
http://i.imgur.com/8CfiF4i.jpg
http://i.imgur.com/asBabbB.jpg
http://i.imgur.com/UfrKF6f.jpg
http://i.imgur.com/GppdXnj.jpg
Here are some of her comments from 2chan that someone posted to reddit:
出血はそんなにしてない
どうしよう
There isn't too much blood. What do I do?
駄目だ拭いても拭いても血が溢れてくる
It's no use. No matter how much I wipe up the blood just keeps coming.
冷たくなったから温めた何で温かくならないの?
今ねお風呂入ってる
それより皆脳髄の色って何色だと思う?
It got cold so I heated it. Why won't it get warm?
It's in the bath now
Enough about that, what color do you think brains are?
脳髄や脊髄を培養液に漬けてずっと世話してあげるんだ
I'm going to put the brain and spinal cord in a jar of culture fluid and take care of them forever.