I saw grandma (2 years ago someone grandma died heres her expierience of seeing her again).......

This happened two years after my grandma died, I was 17, I'm now 27, for about a week I was dreaming of her every night, I couldn't figure out what she wanted, she kept trying to tell me something. My mother was telling me to go to church and light a candle for her because maybe she's not at peace.I was sleeping one night, my mom was still awake and she was on the phone talking to family members that live in europe (they are six hours ahead), I was sound asleep when I suddenly woke up. It was pitch dark in my bedroom and I felt like I was woken up by something, I was 100% awake, I know I wasn't dreaming, and I noticed something in the corner of my eye it was a bright light. I looked over and I saw my grandma standing there just looking at me! Mind you I couldn't really see her facial features but I remember that she was wearing a white sweater, I was frozen in shock!I tried to bang on the wall to call my mom because I couldn't scream, my hand froze mid air, she was standing there for what appeared to be about a minute When she finally disappeared. I ran out of the room and I was trying to tell my mom what I just saw but the words wouldn't come out, I was having a panic attack and had trouble breathing, my mom was going to call the ambulance but I stopped her and was finally able to tell her what I saw. I don't know if she believed me, she said I probably had a nightmare, I got defensive because I know it wasn't a dream, I was wide awake. I looked at the time it was 3:30 in the morning, I never went back to sleep that night.About 2 months ago, I went to a really well known medium because my dad passed away in jan, 08 and I wanted to hear what she had to say about him and after my reading, she said to me, "your grandma visits you all the time as well she just doesn't want to make her presence known because she knows that she scared you half to death and she's sorry about that", the medium also told me that she came and woke me up between 3:30 and 4 in the morning. I couldn't believe that she mentioned that incident because I never even thought of that, I was strictly there to hear about my dad. But I'm happy to know that she's still around.