I heard this story when I had started working at a local nursing home which is home to around 80 residents. We have 3-4 spirits in our nursing home which all have different personalities.
There was a nurse who worked at the nursing home where I am currently working, who had suffered from post natal depression and after looking after 6 children and working long hours, she couldn't take it anymore, I was told she went home after her night shift had finished and had left notes for her six children and her husband. She had proceeded to overdose on painkiller medication. Her sister had gone around that day to find her deceased on her couch.
Since then, she has been a regular visitor to that nursing home and 10 residents and 5 staff members have been witness to her standing at the end of their bed, donned in a black dress and hood, and has been seen walking into residents room, but if a staff member followed her in the room, it was empty.
While on night shift, one night I brought along a pendulum to see if she was still there and began asking questions like "are you grounded?", "would you like to be released?", and so on and the nurse I was on with started asking questions that only the deceased nurse would know the answers to. We have found out from our Q & A with this spirit that yes she is grounded and she spends most of her time in the chapel with her photo. And that she would not like to be released, probably she may not like what might await her if she does cross over completely.
The chapel in which the lady in black stays or Helen, as she is called, has a very ominous and depressive feeling to it.
I'm not very good at telling stories, they always come out not the way I want them to... lol