dazed and confused

Had surgery 5/7; Her2 +3; 7mm tumor; mostly clear margins -- anterior (next to skin) not so clear. Neg nodes. Go to onc yesterday who says -quote- forget about the Her2. It's irrelevant. You need one of the following; re-excision, radiation, arimidex or full mastectomy followed by arimidex. --end quote. Go to surgeon today who says..-quote- no, no, margins are fine, you need mamosite radiation then arimidex. Don't worry about Her2 until there's a recurrence - end quote. Radiologist says (two days ago) - quote - because of the Her2 and the intralobular carc. in situ I don't feel like you're a candidate for mamosite radiation, you need a med.onc. end quote. To say I am confused is an understatement. Any thoughts to add to this stew?