Maria feels a sense of belonging based on the cultural and linguistic features she has in common with a particular group of people who share her ancestry. In this sense, Maria has established

She has established a cultural identity of her own.

Explanation:

Based on the cultural and linguistic features that she found similar to her own, she feels a sense of belonging in the same circle with those other people who have the exact same thing. She knows that she also have a common ancestry with those people. So, for her, she has got her cultural identity figured out, establishing her own identity based on her own judgement from the people she had interacted with. By feeling a sense of belonging based on the cultural and linguistic features she has in common with a particular group of people who share her ancestry, she has established a cultural identity of her own.