I am fairly new to these things, having fairly no supernatural experiences before a few months prior to this story. As of right now, I am fully aware there is a protective spirit... Or malicious spirit. Where I live with my cousin. For quite some time, I have had to leave my door closed because I would always wake to find it closed and my cousin witnessing it closing when he normally headed to the bathroom. Well, only a couple of times have I witnessed things myself, whether it is because the spirit was seemingly afraid of me. First thing was a male's face out of the corner of my eye which quickly disappeared when I looked towards it. The next thing I have personally experienced was the back door of my cousin's home opening by itself when it was locked. I am not so concerned for myself, for the spirit not bothering me, as much as I am for my cousin's health. I believe it may have been attached to a picture someone painted that he brought home from a visit to a haunted abandoned home he went to. Whatever it may be, it is focusing more on my cousin, making him sick, scaring him (or something clearly letting me know of its presence). I wish to know if there is a demonic, angelic or other type of spirit like that. It is normally playful when it shows its presence to me in some ways like earlier when I was watching tv, I heard things scratching on the wall and odd noises only for them to stop when I acknowledge them or other "playful" ways. I just need some feedback on the spirit.
1) What kind of spirit could it be?
2) What to do to know its purpose?
3) How do I get it to stop harming my family?
Can I have some answers to these questions? They would be greatly appreciated. I do not fear the spirit, I acknowledge its there then continue what I was doing before. Is that a good or bad thing to do?