Grade 3 stage 2 her 2 breast cancer how deadly is this what is the chances of survival for 70 yr old woman, what to do?

High risk : Grade 3, stage 2, her 2 over expressed, high risk for recurrence. I would recommend adjuvant chemotherapy and Herceptin (trastuzumab). Herceptin (trastuzumab) is then given for a year. If she has not had surgery yet, then one would definitely consider neo adjuvant chemotherapy with Herceptin (trastuzumab) and Pertuzumab. Age is not a reason not to treat! In addition a 70 year old patient may do very well with chemotherapy. Not old.