TW: suicide

I wanna start off by saying I don’t have bpd myself but my mom does. She was diagnosed with it when she was 18 and now she is almost 50. Our relationship isn’t the best and I see her only once a week (sometimes less)
She visited a few days ago and she decided she wanted to sleep over at our house (I live with my dad and my siblings). It was like evening and she was crying and sad. We just talked about a lot of stuff and I wanted to help her and be there for her. She mentioned that she took a lot of paracetamol like multiple packets of it (she said 20 packets). She said she just passed out and woke up and then went to bed. This made me so scared. I knew she was suicidal but I never knew she actually had attempted suicide. I want her to get help so bad. Her bpd and other mental issues aren’t getting treated. She is drinking a lot, smoking, doing drugs, eating badly, risky and aggressive behavior. I’m so scared for her. What can I do? How can I convince her to get help?