My aunt's got breast cancer

My mom told me my aunt is now undergoing chemotherapy treatment for her end-stage breast cancer. When my called her to ask her how she's doing, she says she feels really terrible. She has a constant headache and also vomits all day long. She is looking for a headache treatment now. She really cant tell which is worse, being sentenced to death by the cancer, or living with a pounding headache 24/7. Sad, huh.