This is the 896th most frequent Romanian word.
cristina
"Cristina" is a Romanian female given name, equivalent to "Christina" in English.
In this context, 'Cristinei' is the genitive form of the proper noun 'Cristina', indicating possession.
Cartea Cristinei este pe masă.
Cristina's book is on the table.
In this sentence, 'Cristina' is a proper noun used as the subject of the sentence.
Cristina merge la magazin în fiecare seară.
Cristina goes to the store every evening.
Here, 'Cristina' is a proper noun acting as the object of the verb 'am vorbit' (I talked).