Conversation with my little sister

[Giant Blue Anteater]

I think you should've challenged her shaky logic rather than saying "No it dosen't."

 

[Nogre]

If she's still attending or has yet to attend high school and the school has a debate team, try to get her to join it. That's about the only way I know of that can teach critical thinkings skills to indoctrinated theists that reach that age without having learned the skills already.