What should I do when my mom threatens me with a knife and I say,”Go ahead! Do it! Ki11 me!” And she calls me crazy, but she’s the one who threatened?

She’s done this multiple times and I just say the same thing! She knows I’m suicidal so why does she does this? And say that?
What should I do when my mom threatens me with a knife and I say,”Go ahead! Do it! Ki11 me!” And she calls me crazy, but she’s the one who threatened?
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