Answer:
It depends on the context of the text
Explanation:
The nickname "Barbie Doll" is used to say that someone is very pretty to an almost perfect degree. However, if it is used in a bad context, it may mean that the person is fake or "plastic"
Since I never read the text myself, does the main character degrade her own apperance? Does she say that she thinks of herself as ugly? If so, she is most likely comparing herself to someone else, someone as pretty as a barbie doll.
