I'm so sorry to hear of your sad news. I know what it's like to lose a parent. My dad died last year after battling cancer, although it was his heart that gave out in the end. Even though I was heartbroken, I knew that he wouldn't have to go through any more suffering. I'm pleased now, that when I think of him, that it's the happier times I remember when he was well and fit - the last few years of his pain are thankfully receding
We haven't communicated directly, so I hope you don't mind, but I just felt the need, along with so many others, to send you good wishes, and to thank you for sharing this most incredibly personal time with us. How wonderful that you had those last moments together, and that she was lucid. My deepest sympathy.
My mother died in hospital in 25th May so I can image how sad you must be feeling.
Her husband doesn't have dementia so he is devasted - I can appreciate how much "better" it would have been the other way around - I think that after her initial grief, she would have "forgotten" very quickly.