Implications of young adult having birth control implant?

My daughter was forced into a birth control implant when she turned 17. I was not here yet so was not consulted. My sisters both had breast cancer, ages 30 and 46 consecutively and our mother had post-menopausal breast cancer. My daughter will be 18 in a few months and wants it removed. She feels it is making her ‘moody’. This is not my field of expertise and of course I am furious that I was not consulted and think the familial bc probably was omitted from the medical history. She is also on low dosage birth control pills, on top of the implant. Is this safe?