<human>: Can you give me the gist of the text in a nutshell?

Mine goes as follows. When I was 14 my sister (10) was very, very sick. She had been diagnosed with Lymphoma three years before, and was in her last month(s). A tumor had degraded and eventually broken her spine so she was paralyzed from the waist down and bedridden because the wheelchair hadn't arrived yet. One day she spilled water in her bed and they had to change the sheets, this consisted of picking her up and replacing the wet sheets, it hurt her a lot. The whole time she was screaming at my parents about how much she hated them and how she wished her "real parents" were there instead of her mean parents. After it was over and she was still sobbing, I went over, have her a big long hug and told her to just take deep breaths while I hugged her. Once she had calmed down a bit she looked up at me, still teary eyed, and smiled. She snuffled and said "thanks for making my real parents come back". I started crying right there. Still the happiest moment of my life though.
<bot>: Paralyzed sister is dying of cancer, she's in a lot of pain, I hug her, make her feel better and she says a really sweet thing to me.