It isn't the information that is your problem. It is your method of getting the message across.
A prime example is this one: Phizzy> I tried 607. It is like talking to a wall. “God has to have an organization, if it is not the WT then who is it?”
What has that got to do with 607?
Forget trying to find something new to tell her. You have plenty already.
You can't keep doing the same thing and expecting a different result.
You have to learn to stop telling her stuff, and learn how to ask a question and then guilt her for the dishonest tactics that she uses to weasel her way out of her problem.
Pick a subject that she already responded to without actually confronting the problem and make her deal with it without letting her use her JW evasion training to fool you.
Every time she answers a question .... pause .... and ask yourself .... "Did she really answer the question that I asked?" If she didn't ... restate the question without rephrasing it. She wants you to keep rephrasing it until you give her a loophole or a change of subject ... give her nothing except guilt for her subterfuge. It is very OK to feign being offended by her attempt to treat you like a fool.