@r2dt,
Talk to her when she's sober, just like you should with any drunk who's getting out of control.
Tell her that the next time it happens, you don't care what she says, you're calling her an Uber.
Then do it (and do it for any other out of control drunk, too, of course).
If she is truly that plastered, then you have saved her life and potentially others' lives as well.
If she's not, and bitches that it's expensive or she didn't need it, etc. then she is using drinking as being an excuse for being an asshole.
Such a person is no friend of yours, or at least they shouldn't be.