The other day I mentioned beings hanging around in the ghost realm. Buddhism says that you can wish them well with Compassion/Lovingkindness Meditation. Buddhism says that you can actually try to communicate with them and one way that they do it in Theravadin Buddhism is to actually tell the being that you are okay. Tell the being you are okay, that you are going to take care of everyone else. In that way the being may believe you. They may relax and then they let go of their attachment to get back and they can get a new rebirth.
So Buddhism says that in your thoughts, in your meditation, to try to communicate with them is okay. So you can go ahead, treat them as any other being, only that it's just in your thoughts that you try to communicate.