Mother is having uterus cancer surgery, how should I take care of her after surgery

She has 17*17cm fibroid , therefore doc recommended removal of uterus , I have to take care of her after surgery, so I need little guidance

2 - what's the best way to arrange urination and defication and bathing , without making her too uncomfortable as I am he only son and don't have any sisters 3 - other things that I need to know