I don't disagree, but a bottle of gin PLUS 20 beers a day is way beyond even a hard core tolerance built up. Absorbing the liquid alone in 20 beers would be beyond what most bodies could tolerate (imagine 20 twelve ounce bottles of water a day)...add in the alcohol in the beer plus a bottle of gin, EVERYDAY for a long period of time, and would be almost impossible for somebody to not be dead.
The worst alcoholic I ever met drank a bottle of whiskey a day and that killed him. I cannot imagine what it would have been like if he had 20 beers a day on top of that.
If not dead, then not exactly of the best of health.
It is physically possible. Likely? Not so much. And given that she's female ( = far more prone to the negative effects when compared to a male, both drinking the same amount), I'll go with...not likely in this country.
With that said, if you start at 8am and don't finish until midnight, and you're eating too, it becomes more feasible.
Needless to say, the OP's attorney will explain things to her.
