Answer: Stereotyping.
Explanation:
Stereotyping is defined as mechanism in which stereotype view or representation of stereotype is doen in any situation.Th person tends to display mistaken beliefs due to overgeneralized thinking about other people or group. They tend to make beliefs on the external factors of people and don't consider the internal thinking,values ethics etc a person carries.
According to the question,Liliana is involved in stereotyping.She has over-generalized idea about her parent's age, look and characteristic without realizing about the objective internal characteristics.