Girlfriend has alcohol problem

Me (M28) and my very new girlfriend (F28) were great until a recent night. She told me she was going to commit suicide in September after all her trips. This crushed me, and I personally didn’t know what to do. I told her best friend what was happening, and I also asked one of my close friends how I could handle this and help her effectively. She was furious about this, especially with my friend knowing her personal business. I’ve always been told to share that with important people who care so she can get helped and supported properly! It was all out of love and wanting to help, not trying to share and “trying to help yourself.” She is furious enough to where she pretty much hates me now.

She is not consistent with taking her anti-depressants and her alcohol use is overly concerning. Constantly not remember the night before and drinking A LOT. After work I witnessed her take 8-10 shots of vodka along with another drink. This was at home and it was only me and her, and I don’t really drink. It is not uncommon when we go out she gets drunk to a point where she is stumbling and/or forgets what she said that night when I tell her what happened. I know for a fact drinking and anti depressants don’t mix. She also doesn’t go to the doctor because she refuses to pay for insurance…

I’d like to know how I can bring up her drinking habits without her being upset. Because when I do say something even small like, “that’s your 5th one?” She will be upset saying things like you can’t tell me how much I can and can’t drink. What should I say because I can’t be around this, it is effecting our relationship heavily.