Talk to Gynecologist on Bleeding After Abortion

My wife took S* M*M 200mcg due to a miscarriage on 26th March 2025 and the bleeding started on the same day but on 5th May 2025 she started to have her menstrual cycle and now it's been 19th May she is still facing little bleeding in dark brown color, doctor said your uterus is clear but why is she still facing the bleeding, she also had cefsp*n for 5 days but still there is no change, what should be done now? It's gonna be almost 2 months. She had 10 weeks of pregnancy and there was no embryo only sac.