My grandma died and I feel worthless.

My grandma got evicted from her apartment. I love her so much and would never want her to end up homeless. I have a spare room in my apartment and a good job so I thought I could take her in. I offered her the room but evens thought she would be a burden she agreed. After she moved in it was clear we were incompatible. She didn't like anything about me. My job, my hobbies, my weight, my appearance, anything and I constantly tried to please her. My last straw was when I had a really big job interview and was so stressed about it and she was so mean and hurtful. I said I couldn't take it anymore and that she had to go. She broke down crying and said that she had lost everything and was too old to find a new place. I felt like an ass and took her back in. She has been living with me for months now and I have changed so much for her. I lost a lot of weight, I got a new better paying job, I stopped playing video games, I changed my appearance, and I even changed my religion for her. I've never felt so worthless. I evicted her because she was mean to me and she bullied me into taking her back in. I gave up so much for her and she never even noticed. I don't even recognize myself in the mirror anymore. She still doesn't like anything about me and I still do everything for her. I feel dead inside and I hate myself.