Chemotherapy will fuck her up in plenty of ways. Monetary, emotionally and physically.
However there's the chance Amber refuses treatment. Power level here, but if you see some of the people who go into chemo, some just look absolutely fucking miserable.
I expect Amber to not do chemo, she'll maybe have a treatment once, then claim that she's done.
Hell, she may not even get to the first treatment. It's very expensive and a lot to deal with. Everyday for fucking 4 weeks, having to wheel her fat ass to the oncologists. Can you see her doing that?