Me and my brothers talked when we started noticing that our widowed Mom was declining. One of my three brothers took her in. At first she loved it. She thrived! But then she had a mini stroke and we had to insist that she not drive. That was her final straw. She gave up. It took her about six months before she died. She died with my brother, his wife and me standing around her bed. Don't beat yourself up. Often the plans that people make just don't work for their purposes. If her facility isn't taking good enough care of her do what you can to find another. Get you Grandmother some THC gummies and give her a little dose. It will give her a nicer, easier to cope with existence. If you can visit with her more than you do now, then do so. That will be for your soul. Peace to you and your grandmother...and your parents. Help your Dad scale it down