Parent in crisis

Hi first time post. Just seeking some advise regarding my mother who has paranoid schizophrenia and boarderline personality disorder. She has been progressively getting worse for the last year. very erratic behaviour spending all her money now is in bad debt as she got a credit card that she can’t afford to pay for. Drinking excessively. Was living with her partner but she moved out middle of Last year and back home with my nan. Stayed for 2 months then moved back in with him and now living at a motel. She had a job but recently quit and said that she wants to move but doesn’t want to come back home. she’s very agitated when you talk to her cuts conversations short. When she phones it’s always her crying and saying she feels unsupported and nobody is helping her. Me and my family try to support her but she is clearly in crisis mode and is refusing all help saying she “doesnt have a mental illness” gets aggitted when suggest she needs to see someone.

So my question is what can I do legally/in general to manage and to help her if she won’t get help. I’m concerned for her safety if she’s planning on moving and has no money and substance abusing. I feel lost any advice would be much appreciated thanks