My family hates me because I'm an athiest?

I told my mom I was an athiest and she says " you have the devil in you and its scary. Youre cheeks aren't red like they are supposed to be". She also says I'm polluting the entire family. She said It would be better if I was doing cocaine. I'm 14 btw. No matter how much I calmly reason with her she keeps being so mean. I've never gotten in trouble at school and have always had bs and as. Now she says shes failed me and when I start doing drugs She won't know what to do. Can anybody explain this she has NEVER been this mean before. Also what can I do to fix the situation