I am a Her2+ , I am really glad to hear DCIS is the stage, really a precursor to invasive cancer. Your friend is really lucky to have a friend like you. We all need a second set of ears, and a second to ask questions that we might not think of.
I feel like a well informed decision is the only good decision and for that you need more than just a quick appointment and the minimum info.
The shock value of finding out you have cancer can predictably leave you struggling to stay focused and absorb all the information being thrown at you at once.
Do you plan to be with your friend through treatments?