بسم الله الرحمن الرحيم
(Fatwa: 284/282/H=03/1437)
Ma-shaAllah it is a nice dream. The meaning is that your grandmother is getting benefit from your good deeds and isal-e-sawab. But there is lack of khushu and khuzu in good deeds as well as lack of sincerity from your end. Try to remove it and pay more attention in sending the rewards to your grandmother.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
