Resolved Question

I'm 16 and my grandpa died when I was probably 4 or 5... I don't remember much of him but my mom told me he loved me a lot.. Well here's the dream of what I remember:
I was in this house with my mom and we heard footsteps. Loud ones. And it was my grandpa, and my moms like "Oh it's probably grandpa." and it got louder and it sounded like he was going to come downstairs. So I got really scared and ran outside. And I remember everything was a little foggy, and the weather was just all rainy, gloomy. And I was looking at the top window where the sound was coming from and there was a floating rosary like my grandpa was holding it. Which really creeped me out. And he let go of it and they fell into my hands. So I went into my car and looked at the window again, and i could see him this time, and he was standing in the corner of the window looking down at me and smiled. I woke up and started to cry. I felt overwhelmed. What does the rosary mean? What does this all mean?

i think you did something really good in life that your grandpa come to show his happiness towards you.