What do I do, mom hates assisted living?

My mom is making me feel so guilty and depressed. She has been in extended Assisted Living for two months, she fell and broke her pelvic bone. She fell six months before that and broke her wrist. My Dad died five months ago, he took care of her, my husband had a heart attack last year, has a pacemaker, and other health issues. I am at the end of my rope. I go see my mom every day, I hear the same thing every day, "When can I come home, you don't want me". I tell her I want you Mom, but I want you to be safe. Then I hear, What made you change your mind? I tell her, I want you mom, I have a sick husband, I can't take care of you too. I have 12 steps to get to my bedrooms, she said she will stay in her bedroom all day. At the nursing home I hear from everyone what a devoted and loyal daughter I am going to see her every day. She is miserable and makes me feel guilty, what am I sopposed to do?