I was 58 yrs when dx Jan 2003 with a stage 2, grade 2, IDC tumour with associated
DCIS, comedo and cribriform, and 4/18 lymph nodes positive. I was ER+, HER2-, PR not done. I had 6 cycles of FEC, then 25 rads, Been on Arimidex since and doing well, even though I am on weekly chemo (methotrexate for Crohn's).
My dx is a little different to your Mum's and this could be the reason why her Oncologist is advising a different chemo regime after the FEC.