I'm just kind of interested, have you expressed this feeling you get with your Grandma, and if so, what does she think about it?
Hi Mandii, I agree with Ecila, I have had a lot of experiences with spirits. I personally have never met any that are "bad" most of them are just misunderstood. You may want to talk to them and tell them they can cross over using your help if they choose. Then after they are gone or if they seem to still be there you can do the cleansing. You can find out how to do this you can do a search for "spirit home cleansing" and find a way to do it that fits your way of thinking.