This is the 8445th most frequent Russian word.
наталья
"Наталья" is a Russian female given name, equivalent to "Natalia" in English.
Here, 'Наталья' is used as a proper noun referring to a person's name.
Наталья — это имя моей сестры.
Natalya is my sister's name.
In this example, 'Наталью' (the accusative case of Наталья) is used as the direct object of the verb 'встретили' (met).
Мы встретили Наталью на вечеринке.
We met Natalya at the party.
Here, 'Наталье' represents the dative case to indicate the indirect object of the verb 'подарил' (gave).