One thing to always keep in mind. We can only control what we, ourselves do. We have no control over anything else. If this is applicable with the living, it is that much more important when dealing with those who have passed.
Lastnight while do a reading in chat six was hit in the face by a spirit trying to help the woman he was trying to contol in the spirit world. This man abused this woman and was still controling her and as six told her to go to the light he got mad and hit her in the face.