Hi emanresu,
I'm another non-jw who can't maintain a "normal" relationship with my jw friends. It's like this: they'll talk to you, and be very nice as long as they think there's hope of you converting. Ask one difficult question too many and you become a spiritual danger and they'll back off. On the other hand, if you express interest in the cult and try to get their confidence by not opposing, they'll get over hopeful. and when you cease to "make progress", you'll be avoided more than before.
The only chance I see is, if she'll talk to you at all, is avoid religion as a topic completely. Sometimes new nearly-converts find the religion too restrictive, but they have to come to that understanding on their own.
Retro