(spoilers for season 7!)
Amy Pond was a monster. More specifically, she was a kind of monster know as a Kitsune. Like the rest of her kind, Amy needed to feed on human brains(part of them anyway) to survive. For most Kitune, this would be a simple matter of finding suitable humans, killing them, and taking what they needed to survive. For Amy, matters where not so simple. She had sworn to a boy name Sam Winchester that she would never kill a human being when she had been just a girl, and she intended to keep that promise. But she still needed brains to survive.That is why she worked at a morgue, so she could access the brains of dead humans and take those instead. After all, the dead didn't need them anymore!
But there was a problem with this plan: dead brains did not provide the same amount of nourishment as living ones, and Amy was starting to get HUNGRY, even after eating as many as five dead brains a day! Clearly, she needed to find a way to curb her monstrous appetites before she lost control of herself and started killing people like her mother had done. She needed a plan, and she had come up with two different possibilities.
The first involved magic. Being a supernatural creature herself, Amy had naturally been curious about other elements of the supernatural the world. Her search for such arcane information took her to many places: libraries, antique stores, "occult" shops (most stuff at these places was fake, but she occasionally got lucky), and even the internet. That is how she had come to possess a 13th century spell tome, which had been used by real witches for centuries. This book seemed to have spells for everything. In fact, there was even a spell for curbing supernatural appetites! However, Amy knew that using magic could be dangerous, and that spells would often backfire on the one who cast them. Therefore, she was more than a little nervous to take this path. Even so, she was still desperate enough to at least consider this option at this point!
The other option involved food. Human food. It was a little known fact that Kitsune could, in fact, eat regular food if the situation called for it. They just didn't need it in their diet, and could not survive solely on "normal" food for very long. However, she had read that Kitsune could survive on human food for short periods of time, if human brains where not available or easy to obtain. They could also supplement the diets of Kitsune who could only "feed" rarely, although the effects of such a diet on a Kitsune would vary from individual to individual. Amy wondered if she could survive on a combination of human food and morgue brains without getting hungry. But she couldn't help but wonder if that plan would work either. What if it didn't, and she got hungry again and killed someone? Furthermore, even if that "diet" did work, Amy had no idea how much human food she would have to eat to curb her appetite, or would that type of sustenance would do to her body. As far as she knew, no Kitsune had ever tried to live on such a special diet. But it still might be worth a shot...
Which option will Amy Pond choose? Or will something else happen to Sam's boyhood friend?