Is a low pulse rate with high blood pressure dangerous for an elderly woman?

Depends.: Low pulse rate associated with symptoms or below 50 without meds probably requires some investigation. The degree of BP elevation determines how "dangerous" it is. In elderly patients it is often reasonable to accept higher baseline bp's rather than to push medications. If i can get a BP down to 140/90 range without side effects in an 80 year old I am generally pleased.