She can and should use the argument that you meet in puplic, so she can argue that both of you play after the rules for dating, exept you unbaptized. If there any trouble, but mostly ask after a cong is typical JW-smalltalk. Keep calm.
And as the others told you: do your research about the teachings. Read "Crisis of considence". Don't do the dip. I caught inside, so belive me, if you trust the bible it don't mean you have to buy the JW-cult.