@wtr2026
It is a long road. This challenge of caregiving can be a whetstone for you to sharpen a new skill for yourself-objectivity or non-attachment.
There are two arrows. One is a dx of dementia. The second arrow is the OMG why is this happening and what am I going to do. I am frightened, and this is awful. The catch is to not use the second arrow.
That being said, we are human and have human responses, but as much as one can not do arrow #2, there is a space for relief from the upsetting responses.
Also, set some quiet time aside for yourself and listen to a good meditation download.