Atheists: my atheist, daughter, Mary, is considering leaving your club but she told me she worries...?

about how her atheist, , biker-gang comrades will take the news. She fears it may become violent. I'm just enthralled at the prospect of getting her back into the loving, blinding-light of Jesus' love and want to protect her at all costs now. I'll worry about the thing later (much, much prayer). But, atheists, how do you treat ex-atheists once you find out they've betrayed you by deciding not to go to hell with you?