Deceased Mothers message via dream

I dreamt of my mother who passed away some 17 years previously one night where she came to me and in my dream i was in ashopping centre and she floated past me. I followed her and she was working in a really old jewellery shop doing the books for the buisiness like one would do 60 years ago. She was very busy and said that she has been watching us and has met my two older children and wanted to meet my youngest. Suddenly my youngest child appeared next to me and she said hello to her and looked me in the eyes and told me she is going to be someone important one day. She went on to tell me that my oldest brother whom i hadn't spoke with for a year because his wife was making trouble would apologise to me and i wasn't responsible for the breakup and not to go to them until they apologised to me, which about 6 months later did. Then she was specific for me to give my sister a message and that was that she has to let her go as that is why she can't leave and she has to deal with her death and not to blame my father for the way he treats her as it all has to do with his childhood. After this, she said that she was very proud of the way that we have all turned out and then the picture started to dissapear like Pixles from a computer and i was trying to hold on to the bench and i was being pulled away from her and i didn't want to go as it felt warm and comforting and i wanted more messages. I have tried to have them again and they wont come to me. Does anyone know how i can make these happen again. I also dreamt that my sister in law was going to have a baby girl with beautiful blue eyes and no hair and told her and about two weeks later she found out she was pregnant and had no idea as she wasnt even trying. She ended up having a little girl exactly as i described.