Some people living with Dementia are actually frightened of a shower, the water can feel hard on their sensitive skin.
I used to sit my late husband on the shower chair, and gently wash him all over then take the shower head in my hand, have it on a low setting and quickly rinse off. It is essential to have hot fluffy towels ready and to make it fun whilst showering, chatting away about this and the other so the attention is taken away from the actual showering. Just imagine how undignified you would feel yourself to have other people showering you. If the family cannot do it, get a domiciliary carer to come in a couple of times a week, someone she really takes to is important, who can convince her she will love her shower. They need to have plenty of time no rushing, we allowed 2 hours in total. The cared for gets exhausted just showering at that age. My partner who is 89 gets exhausted shaving let alone showering. He can only cope with that on a Sunday when he has no other appointments. Good luck.
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