I have such vivid memories of an anime I watched when I was a teen (probably 2007-2010ish) where a girl visits someone in a hospital, maybe an old lady or another girl and they try to kill her maybe stab her? I think she had her back turned and they try to stab her up against a wall or something. I also have a memory of like burying living things on a hill to try and get a wish or something, and they tried animals but that wasn't working so they wanted to try a human.
It is driving me insane that I cannot remember what anime I'm thinking of. It's totally possible my brain is melding a few things together and not all of this is true but I have done countless searches, followed the pinned guide to try and find it, nothing is working. Any help is appreciated!