Inna lillahi wa inna ilayhi raajioon.
MAy Allah grant her jannat al-firdaus and give you and ur family patience in this time.
It is very hard to let go of people, but it is much easier when you know that they are going to the Rahman, and the Raheem who is the Most Majestic.
May Allah give your grandmother's soul ease, and widen her grave and place light in it. And guide all her family to the Siraat-ul Mustaqeem.
Keep strong bro,
Wassalaam