for hanging, it depending on how long your brain goes without bloodflow, you can end up with anywhere from minimal brain damage to being stuck in a vegetative state. it just depends on how long youve been in the noose for before falling out or being rescued or anything else that gets the pressure off your carotid arteries
its also possible to get no brain damage, but for this to happen youd have to have fallen or be taken from the noose fairly quickly after beginning the attempt
im unfamiliar with night night unfortunately so i cant provide any help there, sorry