Answer:
Hippocampus
Explanation:
Based on the scenario being described within the question it can be said that the most likely reason for this is that Farina suffered damage to her Hippocampus. This is a complex section of the human brain structure which is located deep within the temporal lobe and who's main function is learning and memory. Which damage to this part of the brain would affect both learning and memory such as it did to Farina.