Final answer:
Rosa, a family member of Angelika's, has been diagnosed with mild Alzheimer's disease after displaying symptoms such as memory lapses, irritability, and disorientation.
Step-by-step explanation:
The family member of Angelika's that had Alzheimer's disease is Rosa. Rosa experienced symptoms such as difficulty in managing her budget, irritability, memory lapses, and disorientation, which led her family to suspect that these were not just normal effects of aging. Upon visiting the doctor, undergoing a physical exam, lab tests, and specific cognitive tests, along with a brain scan, it was concluded that Rosa likely has mild Alzheimer's disease. Alzheimer's disease involves abnormal changes in brain cells and molecules, affecting various cognitive functions.