Answer:
Decrease in blood volume can result to low blood pressure (see explanation below).
Rapid heart rate and paleness, clammy skin can be associated to low blood pressure (see explanation below).
Step-by-step explanation:
The decrease in blood volume of Maggie as a result of blood loss can lead to the rapid drop in blood pressure or orthostatic hypotension. When the blood level is low, blood flow is reduced, hence the blood can't deliver enough nutrients and oxygen to the vital organs of the body that require it.
In the case of her paleness, when there is decreased supply of blood to the skin as a result of blood loss or low blood pressure, it results to paleness, because at this point the number of red blood cells might have decreased
Her clammy skin could be as a result of low blood pressure which originated from the shock she experienced.
Rapid heart rate (tachycardia) as a result of can also low blood pressure and vice versa.