I have a few tidbits to add.
Make sure you explain to her that it is often not until after baptism that you find out all the many many rules you are expected to live under or face 'marking' or shunning. When you are studying, they love to talk about a lot of things being a 'conscience' matter--but how conveniently that changes after baptism, suddenly your privileges within the congregation can be taken away over so-called 'conscience' matters.
Many repentant individuals are still disfellowshipped.
You are never ever to question any beliefs or do your own research as that is labeled 'apostacy'.
Any interests, hobbies, vacation time, people you spend time with, preaching time, basically everything and anything in your life that you enjoy will now come under a magnifying glass of scrutiny and everything is related to Satan and the 'world'.
All humans outside the JW's are evil people about to be destroyed.
Tons of information on the internet about all the lies, deception and false prophecies of the WBTS, but oh yeah you are not allowed to read that.
I could go on, and on, and on, and on, and on, and on, and on, etc, etc, etc, etc.