Botox or Fillers on Someone Considered High-risk for Breast Cancer?

You have no need to worry.  Botox and fillers do not cause cancer.  Please make sure that you are injected by a board certified experienced physician.  Good luck.

The fact that you are high risk for breast cancer should not affect (from a medical perspective) your decision to undergo Botox or dermal filler injections.  There is no link between the two.