Persistent blood clots in the legs or arms may indicate a serious circulatory problem, such as deep vein thrombosis (DVT) or another vascular condition, which can become life-threatening if not treated promptly. Since your mother already has high blood pressure, the risk of complications such as clot migration to the lungs (pulmonary embolism) is higher. There are no safe home remedies for blood clots, and self-treatment can be dangerous. It is essential that she seeks immediate medical evaluation, even if she feels no pain. A doctor will perform diagnostic tests such as Doppler ultrasound or blood studies and may recommend medications or other interventions to dissolve or prevent further clot formation. Prompt medical care is critical to prevent serious complications.