My mom threatened to kill herself

Hi. I posted here before and I guess thankfully it's been a while since I had to ask for help.

Recently I've been testing the waters with my mom to gauge at least a range of reactions I should expect from her when I eventually have to come out to her.

I mostly did that by implying to her that I'm gay. I'm pretty much a lesbian so it's not entirely false. She got really mixed reactions and she kinda did that jokingly, but once she began seeing it as a serious pissibility she freaked out. Really really bad.

She said that if me or my sister were gay (and we both are) she'd wonder what she did so bad that God punished her with abnormal children and probably hang herself. And she started talking about how terrible it would be if such abominations could have come out of her and that thebonly reason people have "abnormal children" is that God is punishing them for their sins.

She recently started being excessively religious because she thinks that bad things have been happening to her lately because she wasn't religious enough, but this is a new low from her.

I don't know whether to take this seriously or not, because this is not the first time she's done this. A few months ago she was talking about how if me or my sister had been born autistic she would have killed herself.

I am not only worried about my mom killing herself over me coming out, but also about my family blaming me for it if it does happen.

I can't cut them off or anything either, since I'm going to London for university this year and rent alone is going to cost me £9000 a year. I simply can't afford it without money from my parents.

I'm terrified please help :(