Welcome to My Worst Nightmare

In my nightmare there was this woman that was just standing in front of me not saying a word . She was staring right at me. I had to walk away . I turn around and she wasn't there anymore. Some nightmares/dreams can feel so realistic, so realistic that it feels like your living it. I felt relieved for a slight second. I turn around and expected to keep on walking but there she was standing right in front of me. My background changed I was at a park. I had no clue what I was doing there . I see all my family at a table. I am so happy and they are singing happy birthday to someone but I can't see who .I notice they don't see me but okay later on they do. My background changed again it seemed as if I was caged under ground and only the smallest amount of light is coming in I see something move and it's like a demonic figure it starts jumping up and down incredibly fast around the cage all I can think of is to put my self into a little ball to avoid this thing.