I'm just looking for some similar experiences as I don't know anyone in RL in the same boat.
DM has Vascular Dementia. diagnosed at Christmas but signs obvious for 3ish years.
After much battles with F she got a diagnosis, they went from crisis to crisis... It has affected her mobility a lot so she kept falling. She has osteoporosis so broke her neck and back. F hasn't accepted it at all, he's controlling and abusive at the best of times and was shouting at DM if she forgot anything or couldn't walk.
A few months ago I managed to get her in a care home. Since then I feel so overwhelmed with sadness, it's basically like she's dead to me now and I keep remembering happy times I had with her and crying. It just feels like I'm wearing a heavy coat and can't move in the world. I'm almost finding the dementia worse than a death as I can't have a proper conversation with her, feel like every time I see her is different and upsetting. I couldn't explain this to someone in RL as DM is alive... she still recognises me and asking after the kids etc. Just feel such grief.