It may be worth finding out whether your mother's breast cancer was estrogen receptor (ER) and/or progesterone-receptor (PR) positive, and whether either of you carries a BRCA mutation, to help refine your baseline risk. If those are negative, some observational data suggest that transdermal estradiol combined with micronized progesterone (bioidentical) is associated with relatively low additional breast cancer risk, especially over the first 5 years of usage, though not completely risk free and individualized assessment is needed.

It might also be worthwhile to discuss Duavee with your physicain, although long-term data is still limited.

Would love to hear what you find out.