Dream About Reuniting With Deceased Grandmother

In the class it's diary period and its about to bell and we have a marker that has doms triangle eraser shaped something attached with the marker to erase and mam tells me go and buy it from bookshop and I go and it takes me a whole hour like standing in the crowd and when I come back the students went to their buses and aarti mam and other too teachers are roaming way too freely like their home I get afraid and I call aarti mam somehow and she comes we attach that eraser and goes. I run then through the participants who were about to perform for the sports meet of 9th and then I go towards buses and find out teachers called our parents to pick us up i guess there was a function or event for us too then i see my whole family there and on the right side my grandmother standing and i couldn't believe my eyes because she was dead I knew she was. i just kept staring at her until I reached them when I went there i hugged her she did too very tightly i cried very much and she keeps on patting my back and we go back on car