Oh I do feel for you Kitty. When my Mum succomed to severe Alzheimers Disease and vascular dementia and was moved into a care home under a place of safety order, I had to brace myself before each visit. As she deteriorated, I hated going to see this person who was no longer my Mum and who had no quality of life anymore. Although my relationship with her had never been easy, she was my mother and I loved her.
We were told before Christmas 2013 that she didn't have long to live but she hung on until the end of January 2014. Each time the phone rang I thought that was it, and, by the time she died, I was an emotional wreck.
Writing this is bringing back the guilt I felt at not wanting to visit her, and the effort it took to do so. I live nearly 4 hours away from where she was so wasn't able to go very regularly, but still feel guilty that I didn't go more often. Some consolation is the fact that Mum never remembered whether I had been or not.
This is so hard for you, Kitty, and I hope, for your sake, it will resolve itself soon. Love and hugs.