I don't know what to do

I went to visit with my Granny today because she just hasn't been feeling that well since her last stay at the hospital a couple of months ago; also I was bringing some invitations for her to look at for my cousin's bridal shower next month. My Granny is the sweetest person you will ever meet!! Well, I saw first hand today how my Grandfather just rips her apart. He just keeps complaining about how he can't go to work because he has to take care of her, and how she will never get better.

Hello!!!! He took a vow through better or worse. Well, this is the worst time right now in the marriage. He is suppose to love her but I just don't see that. I was taught to respect my elders, and to not back talk. I wanted sooooo bad to tell him to stop ragging on her, and that it was his fault that she probably wasn't getting any better because his nagging incessant voice just keeps telling her that she won't get better, and that he would be better off is she just went somewhere. He had her in tears. While she was crying she looked at me and said, "Britt, he just keeps ragging me and I don't know what to do." I was at a lost. I was sooo sad for her. I am so angry at my grandfather. How can he do this!!! I'm afraid to turn on the news one day and see that he had enough and just went postal.

This got me to thinking what if this happened to me and I was in the position where I needed helped getting dressed or something. Would the person that vowed for better or worse abandon me or rag on me and depress me so much that I wished I was abadoned? I'm just sadden by this whole situation and my Grandmother does not deserve this!