@Sgamble I also had chemo before surgery to shrink the cancer,also had cancer in lymph nodes. I went private for chemotherapy and surgery then public for radiation. Today now 2 months after finishing a year of treatment ....cancer free.
To help your mum ask her any chores need doing? Her energy levels will be depleted and she will be resting a lot. Cleaning fridges/ ovens gardening etc not a bad idea.
She may resent your help or welcome it.
Even stocking up for her favourite foods or frozen meals not a bad idea Sometimes too tired to cook .
About public or private ask the the admin staff or doctors for costs they are usually pretty good. Best wishes