May the wonder of the relationship you held with your MoM remain in your mind at this time of your loss.
i am 66 y/o was widowed when i was 26 y/o, what has seen me through my loss over the many years, is my holding onto my memories.
and i have never stopped talking to him.
May God Bless you with peace as you walk with your MoM during this time of transition for both of you.