Family stuff :(

[Marsellus Wallace]

As you all may know, muslims are supposed to pray the 5 prayers everyday and its a sin if you won't do or even delay any of them.

So, when I came out as an atheist, I kept them 5 prayers so that no one suspects anything, but about few weeks ago, I just got sick of it and stopped pretending .

Now my mother realized that i'm not doing the prayers, and she's upset and says that i'm going to hell just like my grandfather(He didn't pray at all) and he will never see heaven and other crap like that . I hated what my mother said about my grandfather, cuz I liked him alot, I used to watch WWE with him all the time( He liked WWE alot )

She is not only upset, but she says she is not ever gonna talk to me if I didn't start praying and tell her whenever i'm going to pray, to be sure that i'm not lying . I was like: WTF is this shit ????
She's always serious about the not gonna talk to you thing

I don't want to cut my relation with my mother, so what should I do ? Should I just tell her that i'm an atheist ? That shit scares me alot, I have zero idea what would be the outcome .