بسم الله الرحمن الرحيم
(Fatwa: 1188/911/B=1434)
Seeing your grandmother in white dress with extraordinary Noor indicates that she is in good condition i.e. peace and comfort. It shows that she has been forgiven and she is Jannati.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
