Maybe it will take being fired, and her being officially told she is out of order, and her attitude and remarks etc, are not acceptable in the workplace, to get her to go for help.
I suppose she is capable of using a phone to contact AA, and all that is needed is the willingness to do so.
It is her life, her problem and her choice, so it is up to her to get help, not bleat about her " I think I may have a drinking problem" to you.....you are not AA or a rehab.
I would avoid her or if desperate, go see management......she is there to work, not terrorise you all.
God bless