What she has is most likely a myeloproloferative disorder, when cells grow abnormally in the bone marrow.
Red blood cells, platelets, white blood cells, all originate from bone marrow.
When their production go out of the control, there could be too many red blood cells, too many platelet cells, abnormal white blood cells or there could be a subtype of MD when there is a lack of all blood cells.
Purple spots or patches on the skin are symptom of polycythemia vera (too many red blood cells), a subtype of MD, and puts the patient at risk for blockage of blood vessels resulting in heart disease, stroke, or gangrene (tissue death) of the arms and legs.
Heart attack, stroke with easily bruising are symptoms of essential thrombocytosis, another subtype of MD.
Blood tests, bone marrow biopsy are helpful in correct diagnosis, since every subtype has its own characteristic treatment.

Best wishes!
Marija