Answer:
She wants to preserve her family’s Mexican culture even though she no longer lives in Mexico.
Step-by-step explanation:
The whole excerpt demonstrates how the grandmother wants to preserve her Mexican culture, and wants to pass it to her grand children since they are no longer in Mexico. First, she is stating that the best job he should found is to be a barber, because it is an easy one (inferring that other works in the states are long and hard). Second, she doesn’t want her grandson to date another “race” that is not Mexican (inferring that Mexican girls are the best ones and that if he dates other nationalities, he is going to have problems).