It does seem to be one nightmare after another. I am sure everything will be alright after the lumpectomy. My sister had breast cancer, and they did a radical mastectomy the two days after she found the lump. When they are suspicious that it is malignant, they don't give you time to go away on a trip. But I know how difficult it is to sit in a waiting room while a loved one has surgery.
I'm sorry that she contacted OM again. This stuff is SO hard to get rid of. You can always do the Post sessions again as a refresher. Whatever you do, keep up with the Retro group -- do CORE meetings, go to enrichments, or just volunteer and go greet new couples. We find involvement very centering.
Best of luck to you and your wife after this surgery.