How do I get my sister out of this ?

I am POMO(unbaptized inactive). She is a PIMI(baptized active) but has problems with women being subordinate to men and women not being able to divorce their spouses in the case of domestic abuse. How do I "plant the seed of doubt" without looking like an apostate ? Where do I start ? For the record my whole family belives this shit but some are not as "spiritually strong" as others and we are a pretty big family. My whole bloodline are JWs(some are inactive but still belive) because of my grandfather. He was the one to be introduced to this indoctrination. Any advice would be helpful.