My advice would be to try to sort of date her alone in public places. If she's not so deep in the study she should accept it. While dating is not accepted, it's not grounds for DF, so if you talk your way out of it, the most they can do to you is a private reproof. Your "friends" will probably be colder to you, but you can have her. Now, if you get to that point, while dating talk about religion too, in a non-confrontive manner, encouraging her to do more research, maybe even mention the internet. Don't be too direct with her, as it may trigger the cult defense mechanisms she seems to already have. If you haven't, read Steve Hassan's books - maybe try to get an electronic copy so it's less likely that someone finds out. Or if you can't do that, read the forums here often, to get tips on how to approach someone to help them out of the cult.
In the long run maybe you convince her to not get baptized - that should be your first priority, because if she does get baptized and goes into full fledged cult member, in time your relationship / eventual marriage would be a disaster with you not believing in the cult. If you do get her out, you can still date and even marry her - this is also not grounds for DF. An old JW schoolmate told me she is looking only among non-JWs for a mate, because the JW husband she had was an alcoholic cheater, and she knows her chances are very slim to have a good "brother" to marry her with a divorce and a kid. The WT is very legalistic, and this can be used to your advantage if you know the rules.