Please, if you know anything about dreams, will you help me?

My mother passed away last November. Last night I dreamed I called her on a video phone. I could see her and her surroundings very vividly. She was outside, beautiful hilly scenery, lots of greenery, it was sunny, yet, there was a nice breeze blowing. There was a huge, long table covered in a white tablecloth. The table was full of plants. She was watering them. I told her I had a huge box for her and she said don't worry about it, I have 3 small ones. There at the end of the table I saw her boxes. I started crying because I was actually talking to her and I could see her. She looked so happy and healthy, but I missed her so much. I remember thinking, Oh, that's where she is in Nashville. She never took her attention away from what she was doing. Then I woke up, still crying. I've been crying and so sad all day. If you can help me to analyze this dream I will be forever grateful. Thank you.