Not necessarily. If she has diabetes or peripheral artery disease, the toes are very susceptible to gangrene. They are at end of blood supply and nerves, and prone to injury. Depending on cause, the same pathology may involve all vessels and nerves, though she is not yet seeing symptoms in those areas. Treatment of underlying cause can slow progression.
No. Needs to be checked for pad as well as heart disease and cerebrovascular disease. Is she diabetic? Does she smoke?