I would bet its an Eastern European rendition of
Natasha (see link).
Our venerable leader
Mike C (Allah's peace be upon him) notes that the name is a nickname of
Natalie.
May I also add, however, that
Natasha or Natasa and presumably Natassja(but not its anagram, Satana) also happens to be a nickname for
Anastasia both in the Slavic world and in my neck of the woods.