my mother had breast cancer and reacted badly to the chemo making her very sick and often she had to vomit in the days after every chemo.
fortunately i was unemployed and living at home so i could still make sure she ate and drank enough even though it was hard to keep down.
we even brought down a bed into the living room so she could lay down and rest/sleep whenever she got tired.
i never actually went to the hospital with her because my dad always came along with her and sometimes one of my sisters so she had more then enough companions with her there so i just made sure that everything was ready for when she would come home.
now she is in the pill phase of the treatment (hormone treatment) and she is as active as she always was but she does say she tires more easily but i can not really notice it.
she is even considering to start working again but at other times she says she is not ready yet and i agree with her on that.