My sister is full time caregiver in her home for our mother. She is having difficulty with my mother who lives wih her she is very tempermental and often sreams at the top of her lungs calling my sister & her husband stupid & other names, my sister is having a hard time with this and it is putting a strain on her marriage, I cannot take care of my mother and there is no one who can only solution is a nursing home but my sister refuses to do this, my sister does not go anywhere so my mother stays in a bedroom for the most part , I think this adds to the situation I live in another state 'I have another sister who lives in the neighborhood and will not help out, working full time is her excuse.
I encourage you & your sister to plan ahead for your mother's eventual decline and need for full time skilled nursing care. There will come a day where home care might not be a reasonable solution to the problem. Dementias only get worse and behavioral problems are not guaranteed, but very very likely. I agree with touring nursing homes and finding out if there's a wait list or what you'll need to do to get mom placed.
There's a big legal paperwork side to this for power of attorney, health care directives, and to make sure the finances are in order for a change like that to be less difficult than it already is. You won't be able to figure it out in a crisis or overnight.
it would be helpful if she went with her husband as well im sure he could use it as well. full time care giving is hard and requires so much sacrifice that just for one hour once a week i get to be selfish and say what ever i want. my therapist always tells me its okay to be selfish. your sister needs to learn that too. saddly theres nothing you can say or do that will change your mothers attitude. noting ive tried has helped with my dad. i wish you and your family luck!
Tour nursing homes and ALs in Mom's vicinity and then arrange for tours with your sister for the ones you like.
Some in-home care would help some. If there were a companion or an aide there a few hours each day, Sis could get out of the house and recharge her batteries some. It might also give her more time with her husband. I'm not sure this would be enough, but it would be a start.
Sending Mother to an adult day health center some days a week could also help a lot.
For Sis and her husband to join a caregivers' support group may help a lot.
What are your mother's impairments? Does she have dementia?