I feel trapped in my home, but I can't tell mom because it would break her heart.

I thought everything would eventually work out, but this year has been the worst of my life. Home doesn't feel peaceful anymore. My mom, who is nearly 60, no longer likes the person she used to be (a kind and gentle woman). I’m in my 20s, and over the past few years, I’ve come to realize that she can be quite selfish. Yet, she has always given me the best of everything.
We still live together with my dad and some relatives. She does some simple housework while my dad goes to work, and I work from home and take care of her. This year has involved a lot of heated arguments with family members and neighbors, and her anger has worsened her illness, leading to frequent hospital visits. Every time she complains about something, I do my best to fulfill her wishes.
The most painful moment for me was when I was in the hospital with her. An elderly couple in the next bed told me that my mother cried and confided in them that she wanted to see me get married.
Lately, I’ve been thinking that I can’t even move out of the house because she gets easily mad and yells at everyone. No one else can handle or take care of her; besides me, no one can deal with her, and everyone else has their own families to care for.