I’ve given out, given up, given in

In a way, it’s a relief. I don’t have to go through all the complex strategizing to get him to compromise — only, each time, to come up against a stone wall. Actually, it’s more like being dumped into a vat full of jello. Either way, I get nowhere.
I’m out of energy and stamina. I give up. He can take care of our mother any way he wants.
He has arranged with a female musician friend of his to come and stay with our mother. Every once in a while. No set schedule. I’ve met her. She’s nice enough, and, as far as I can tell, my mother likes her.
I wanted him to hire someone from an agency who is trained to deal with dementia patients. That is, who knows what kind of patience is necessary to deal with someone who pretty much lives in her own personal reality, which sometimes overlaps with a more objective reality — but even then, with her own emotional twist. But he wouldn’t agree to that.
So, I give up, and I’m intellectually and emotionally distancing myself from the situation. I will come in once a month to visit my mom. I hope that we both can take the emotional stress. It’s almost better if she completely forgets who I am.
I’m hoping to be completely out of here and out of primary caregiving by the end of the year. It seems like forever.