Answer:
She is most likely deficient in Magnesium.
Step-by-step explanation:
Magnesium is a mineral that boosts the energy levels in a body. It regulates the muscles and the nerves functions. It controls Blood Pressures and Blood Glucose. Long term use of caffeine enriched products like coffee or tea will lead to lowering of the Magnesium levels in the body. Thus lower levels of Magnesium cause fatigue and severe headaches which is truly a part in Karen's report. So Lower levels of Magnesium caused such problems to her health.