Last night, I was attempting to have a Lucid dream and just about the time I realized I was sleeping, I guess I lost conciousness and started to have a dream about this old women in a tattered black jacket with crazy long sharp fingernails. She was hunched over slightly, walking towards my body that was asleep in a bed. I couldn’t say anything, but I guess I knew I had to get back to my body before she did. I barely made it, and as soon as she was about to touch me, i woke up. It sounds a little like Insidious, but maybe it means something? What’re your guy’s thoughts on this?
Menacing entities in the astral realm are usually personifications of your fears. The way they look is often not really significant, unless there is a specific association with a person or event, but only you can know that. If it happens again, don’t try to escape. Confront the entity, because it can’t really do anything to you and when you defeat it with your mind perhaps you can move on to a more pleasant area of the astral realm.
I have heard that when you dream your consciousness goes to the astral plane. There are other creatures and people who exist there. I guess you met one of them.
I’m going to link you to a page on erin pavlina’s blog. Its about the dangers of astral projecting. I think you might be interested in the 3rd question she addresses.