I am a 23 year old female and i have had a very difficult life with alcoholic family/domestic abuse and a near death experience. Can anyone explain this dream to me?

I was sat in a hall for a work party, during the party the group i was with were being very negative and mean (making horrible comments about other people and decorations) I told the group i was fed up with their negativity and left the hall. I took a lift three floors up onto a end of life ward in a hospital. The person manning the reception for the ward was my art teacher from school who was sketching a picture of a dead baby. I entered a room where my adoptive mother was waiting for me (I'm not actually adopted and i feel this person is one of the nicest and kindest i have ever met which i could be significant). We were in this room to say goodbye to her dad who was dying, as this man was dying i began crying in my sleep and continued crying for an hour after waking.