Ask your mother a couple of simple questions that she should be able to answer satisfactory.
1. Why didn`t both Jehovah God and Christ Jesus never shun Satan the Devil ?
Satan always had the freedom to come and go in the presence of Jehovah in heaven { JOB }
Jesus Christ spent fourty days with Satan allowing him to tempt him in the wilderness and after that was concluded Satan left him until another convenient time { Jesus never shunned him} Luke 4.
2.If Jehovah God loved the world of mankind so much why did he cast Satan out of heaven down to the earth to mislead as many of mankind as he could ? And that he has promised to do the same thing again after the thousand years have ended ? by releasing Satan from the Abyss to mislead as many as he can .?
Ask her if she would do such a thing to her own son.?