Okay ...
Don't pressure her. Stay on here and learn how to "leave jw's" try jwfacts website and you will see the option to "fade". To do this successfully takes years.
This is the only chance to get away from jw's with any hope of her having contact with her family. And this depends upon their following of the rules - and sadly if one decides to disobey the rules then the others may well obey them fully. A lottery indeed.
However if you do normal things that young couples do (and are caught or your g/f has a guilty conscience and confesses) - as in have a sexual relationship when not married - including sexual expressions of affection such as handjobs etc. then she will be disfellowshipped.
If you meet up and do not have a sexual relationship - such as going on vacation together unchaperoned even with separate rooms then the elders (if they find out) will convene a judicial committee and likely disfellowship her for "brazen" conduct.
If you marry without having been caught for any of the above she will be "marked" as bad association and "not quite shunned" at least until you marry and then a bit afterwards.
So if after reading the above you are in for the long haul - you have a chance.
Take it slow - try to meet up clandestinely and get to know one another properly - the next stage would be to make plans. Consult here often.
Have you got the patience for this? Is it really worth the effort and investment? Only you can decide.
It is a minefield!