Answer:
Body dissatisfaction
Explanation:
Any eating disorder usually starts with some type of body dissatisfaction. An individual does not feel confident enough about their body and often finds flaws with it. Sometimes the flaws do not even exist and they just psychologically feel it. When this feeling starts to get stronger, the person can take drastic measures to control their weight. Their entire life starts to revolve around their weight.
For example in anorexia nervosa the person tries to reduce their weight by drastically reducing their diet. They might even become dangerously underweight in the process but in their eyes they are still "fat". Aimee shows the above mentioned symptoms of body dissatisfaction since her weight has started to affect her mentality and social life. She feels that she is fat despite continuous reassurance from her friends.