Answer:
Amygdala
Explanation:
Amygdala: It is one of the main parts of the limbic system, carries a set of an almond-shape neuron which is located in the temporal lobe of the brain. A person carries two amygdala, one on each side of the temporal lobe in the brain. It plays an important role in the process of emotion, memory, sexual activity, sex drive, and survival instincts.
Amygdala part of Padma's brain would most likely store this unpleasant memory.