New Protocols

I am a 10 year survivor of breast cancer (stage 1a, ER/PR+, HER2+). Now my 75 year old sister has been diagnosed with stage 1a, ER+,HER2- breast cancer. She Iives in a distant state, so I cannot go with her to all of her doctor's appointments. She saw her oncologist today for the first time and was told she is most likely to have a lumpectomy followed by 2-3 weeks of daily radiation and then treatment with a hormone blocker. Her doctor said she might not need a sentinel node biopsy (which I had when I had my lumpectomy after 6 round of chemo). There was also no mention of genomic testing such as Oncotype DX or MammaPrint and no plan for her to have a PET scan before treatment. While I did not have Oncotype or MammaPrint testing, I had a PET scan. Can anyone tell me if the above sounds like standard procedure for treating early stage breast cancer in an otherwise healthy woman in her 70's. Thanks.