Carving 'I hate this place' into a cupboard door where it would certainly be found by your mother [if she were alive] doesn't sound like an act of an adult in their right mind to me.
lebaleb,,Sheila wasn't in her right mind at all,,,,in fact after her last stay as an in-patient,it was said that she had deteriorated somewhat,,,and I would have thought that people WERE indeed worried about her health and she would have been teetering on the brink of a disaster,as it was clearly brewing that night of the tragedy.
Just refresh my memory.Did she sign herself out of hospital.? I know that patients can do this,unless they've been sectioned,because places are no longer institutions where they are " locked up."