We hired a new caregiver for my mother-in-law two weeks ago. The caregiver comes for 4 hours/ day. For the first hour, MIL is in a pleasant mood, but when the caregiver tries to help or engage in some type of activity such as taking a walk outside, MIL refuses help. She even hit the caregiver with her quad cane. Mother-in-law has never had a caregiver that was outside of family. I have been her primary caregiver, but I have been stressed with all the verbal and emotional abuse from this woman.
https://www.agingcare.com/questions/how-do-i-deal-with-the-stress-of-caregiving-for-a-mother-in-law-who-has-become-more-difficult-as-she-476341.htm
This was your first post in August. It was suggested in that post to have MIL placed. Its getting too much for you and as time passes, her Dementia will worsen. Her hitting the aide with her cane is not good. She should be checked for a UTI. If she continues to hit, she needs medication. If she cannot afford a nice Memory Care (she is beyond an Asst Living) then apply for Medicaid.
Once she is there, I would refuse to pick her up. This is someone who requires more, and more professional care than can be given in your home.