jzcareformom - Well, your Mom and I have something in common. I'm not a fan of medicines or doctors either and I rarely use (or can't use) medicines. She sounds tough and pragmatic and that's probably a good thing.
I found the biopsy very uncomfortable so maybe that experience is also leading her to shy away from further treatment? Also, if her risk is low per the doctors, perhaps the 6 month wait will show that her ADH is manageable and maybe has always been there and not giving her additional trouble.
My background is that I had ALH (atypical lobular hyperplasia) vs. ADH (more common ductal). The lobular type is trickier. I had a mammogram which showed a possible problem, I did the biopsy and then had to wait 6 months to remove the area surgically because of insurance issues. It was still a Stage 0 cancer at that point and I was monitored every 6 months. After two years my cancer became invasive lobular breast cancer and I had a bi lateral mastectomy. I am much younger than your Mom however (61 now) and when this all started I was just in my mid 50's.....so I had many years of worrying about the cancer progression. I chose to remove as much possibility of cancer as I could to avoid further drug treatments, etc. But again, I was younger and had a much longer time to consider and see if the cancer went anywhere.
And there's the perplexing part - I could very well have never gotten invasive cancer after that biopsy, but I did. I had equal chances of NOT getting cancer and so does your Mom. Allowing your Mom to wait 6 months with her doctors approval will be ok.
Keep researching and helping your Mom understand the options. The 'average' age for breast cancer is the mid 50's and your Mom's risk is perhaps much lower given her age. Try not to worry too much and try to alleviate your Mom's fears about that second surgery......truly not that bad and if she doesn't need painkillers much (I don't either) then it wouldn't be too bad at all for her to endure (not much fun either) but not nearly as disruptive as one might think.
Hugs