Jonza,
I hope you know that your problems are bigger than having children. This GROWN woman is hiding your relationship...she is starting the relationship with lies. Also, if she want to continue her association with the JW org....I hope you know this religion is very time consuming. It's literally their life...and all other things come second (intimate relationships, friendships, children, jobs, recreation, etc.).
My sister and I just had a long discussion about because we were raised JW, we have serious abandonmnet issues. And our parents are/were very loving and provided for us very well. But we always knew that they will let us go immediately if even a thought of choosing not to be Jehovah Witnesses. And yes since I have faded and my sister is disfellowshipped, they always remind us that they cannot have alot of contact with us.
So it's not just the having kids, it's issues that she has right now because of her cult raising that need to be addressed. And believe me they do not go away immediately...I've known that the religion was a cult for the past 15 years and I'm still suffering alot of the residual affects.