Dream of snake

The place where I'm living in is haunted. I don't know if it's a man or a women. At some point it's an evil man and other it's an evil women. And it's body is snake like. It is big and has the body of a snake. It does not like me. I would go across rooms and it would chase me. It would hide a lot of people and take them somewhere. I remember it chasing me to a point where I'd come across this room and be told everything is safe. I'd see my dead grandma and she'd be praying for us to be safe. I'd be praying as well (I'm not religious at all) .but she'd hold my hand and I'd feel comfortable knowing she is there. That thing was there as well. Watching us