1 to cause to adopt a different religion, political doctrine, opinion, etc.:
It is not a religion nor an opinion and what i believe is that Atheism is the truth,although some may have different opinions, it can never change the truth. It opens the minds of others to the things around and widens their perspective of the events happening in their life. If she converts to an atheist, she may very well convert back to a christian. But if she finds out the truth, it would then be impossible for her to become a christian because she already knows the truth. Converting back to religion then would just be the same as lying to themselves.
Although the reason the word "Atheism" exists is only because Religion exist. Atheism comes with Religion, and if there was no religion, Atheism would only be known as, common sense.