Answer:
She wants to preserve her family’s Mexican culture even though she no longer lives in Mexico.
Step-by-step explanation:
In this passage, we learn about the grandmother's way of thinking. We can assume that the family lives in Oklahoma due to the use of the term "Okie." However, the grandmother does not seem to want to assimilate to American culture. We have no reason to think that she hates mainstream American values. However, it is clear that she is eager to preserve their culture by having the boy marry a Mexican girl.