When Agnes DeMille asks Wednesday if she can sing at the funeral she mentions "Somewhere Over The Rainbow". The title of the well-known song from the movie "The Wizard of Oz" is "Over The Rainbow".
When Sheriff Santiago arrives at the Galpin house, she bursts through the front door with her gun drawn and immediately arrests Wednesday for murder. At this point, she has not entered the room where Donovan Galpin's body is seated facing away from the door, and therefore could not realistically have known he was dead.
In the scene where Wednesday is speaking to Tyler (roughly @ 28:30) when he is chained up in the psyche ward. As the chains are pulled in and the shock collar activates you clearly see that the chain attaching to his right arm is attached with a small, cheap, non locking carabiner that would barely hold any weight.