hmm... one last thought. Should you change your mind, I really wouldn't study EVERYthing. I knew quite a bit when a couple of unfortunate souls came across my path.
It is said that you cannot give someone a drink of water with a firehose. I've learned the problem with knowing too much - it's hard not to drown them with what you've learned.
Easiest issue to me? Jehovah's name. Ask her if she could bring her Aid to Bible Understanding Book. When she arrives, tell her you were reading the jw.org website and came across an article that seemed to allude to the use of any name other than "Jehovah" seemed to have something to do with Satan's control (http://wol.jw.org/en/wol/d/r1/lp-e/2010484). Ask her for her thoughts. LET HER EXPRESS THEM THOROUGHLY. When she's finished, ask her what you should do with the information at the bottom of 884 and the top of page 885 of HER Aid book where it explains that the name was created by a Roman Catholic Monk.
I'd then say, "I'm not comfortable with honoring the name a Roman Catholic monk that lived 700 years ago gave the Creator... are you?"
Then, "I'm thinking there could only be one truth - what you told me or what your Aid Book is saying... which do you think it is?"
In 3 of 4 instances, their brains were reeling at this point. In the fourth, the JW tried to make a hybrid out of his words and the Aid Book.
Either decision you make, GOOD LUCK!