my mom has breast cancer

well its confirmed
my mom does have breast cancer..
She will hopefully be starting chemo next week.
Her oncologist really wanted her to start rediation but she had a rare form of skin cancer 20 years ago and had radiation for that. You can't have radiation twice.
She had to take a leave from her job, which is good so she can stay home and chill.
but I am worried, even though when she's around I pretend I am not.
I am hopeful because there have been major advances in cancer treatments but its still scary.
Every paycheck I get I will buy a carton of Ensure (or its Walmart brand equivalent) so when she starts and gets sick from the chemo, she will probably not want to eat. Those drinks will at least give her nutrients.