My Mother Almost Dying

In my dream, my Dad and I were driving down the road. We saw my Mom's car coming towards us in the other lane. We went to wave when we noticed no one was driving the car. I looked back and the car went off the road. My dad looked at me and said,"we need to find your mom!" so we drove forward for 2 or 3 miles. we found her on the road twitching and covered in blood. Pieces of her scalp were all over the road and she was screaming in pain. We rushed her to the hospital and then she was fine.
I always have multiple different dreams in one night. After this dream I had one of my Mom explaining what had happened but it made no sense. It was something like she was pulling down a potted plant and she fell and then the car drug her. this made no sense at all.
Later that night I had a dream that my mom, my sister, my friends and i were in a boat at sea and this ghost kept pulling me in the water to try to pull something out of the ocean floor. i wouldnt because it didnt know what it wanted. i thought it just wanted to harm me. I went through this haunting until I helped it. WHat I find strange is, is that before I went to sleep I heard a glass bottle sliding across a table. I was staying at my friends house where her grandpa used to live who had passed away. we experience a lot of paranormal activity there. What could these dreams mean? especially the one about my mom.. My parent are divorced and my dad isnt even civil to her. why would her help her?