"Ea e fata voastră?"

Translation: Is she your girl?

[aroacegirl]

Would fata here mean girlfriend or daughter?

[potestasity]

We don't really use "fată" for girlfriend; that and the use of the plural/politeness pronoun, strongly indicate that "daughter" is what is meant here. Though the English translation seems to suggest a "girlfriend".

[KarelV]

OK, thanks! And in that case, how would you say "girlfriend"?

[abcdefg-1]

"prietena" which is the feminine form of "friend"

[lufloidio]

The "mireasă/mire" maybe it would be the literal translations of girlfriend/boyfriend?

[PieS717058]

That means bride/groom. Asta-i altă mâncare de pește ;D

[trudatyea]

would "ea este fata voastra" be correct as well?

[abcdefg-1]

Yes, because "e" is the short, informal version of "este."