They love us unconditionally, and that is the most amazing thing about them. I can honestly tell you no human in my life ever loved me like this cat that just passed away on Saturday at 12.5 years old, not even my mother. This cat was like my child.
I found her in my garden, and she was on death's doorstep, only a few days old. I raised her, and she was never socialized around other cats. I misguidedly took in another kitten as a companion, but Earle was jealous and possessive. When the other cat Naomi was stressed, Earle would bully her. They had enough space to keep their distance. But I felt guilty that she thought I punished her by adopting another cat then scolded her for bullying her. Sometimes I would be impatient that she kept rubbing my legs for food, even though she never usually begged. When I would have coffee before work, she would get her fur all over my clothes and want to stay in my lap, even when I had to leave. I felt guilty for not spending more time with her, though we cuddled a lot. I just wanted to express that I can relate to what you're saying. That you worry whether you did enough for her says something about how unselfish your love for her was. That's important to bear in mind.
Oh, honey count those raindrops!