I need help possibly coming out as helpol
So my family is VERY christian and very forceful with it, especially my mom. In the past when i was learning ab greek mythology she called it stupid i said i like it she said well its stupid and that if i ever believed in it im going to hell. She has also called the greek gods demons on multiple occassions ones that "try and take our focus off the real god". my older brother is atheist and she was very dissappointed in him. Earlier today i was educating my dad and older brother on greek things and my dads way of justifying that the greek and roman gods werent similar is because he said they aren't real i say they were to to the greeks and romans and my brother says mars is to the greeks as jesus is to him. (i corrected him and said ares was auctually the greek, mars was roman.) and my mom yelled downstair that it doesnt matter because theres only one god and then preached ab jesus and told my atheist brother he needs to study his bible.
keep in mind my mother shows favoritism ALOT and im sadly her least out of me and my two brothers (she makes no effort to hide it either she treats me like garbage but my brothers like saints) and if this is how she treats my brother for being atheist i genuinely cant fathom how she will react when she finds out i worship "demons". idk if i should just not tell her? im 17 right now but wont be able to move out for over a year. If she comes to my house in the future and sees my altars i might auctually end up having to call the cops because she will lose her mind. So can anyone give advice on what to do and when to do it?