It frequently comes to my mind and I truly hope it won't take me back to my past, my childhood. Who knows what imagination can do and memory loss takes us to a different dimension like I once read in a book a child wrote about his parent. Not lost, just living in a different dimension than me.
I have thought this as well. Yes, a different world, and can appear serene even, but then a quick jump to anxiety, blame, and paranoia when dimensions overlap. A smile and a kind word helps, and to persist with helpful love and attention is the best I can give from my place. I just wish she was having more joyous moments and less bitter ones:(