Oh my! Yeah, in a way many times it is not these peoples' own faults that they fall into a disaster like this. Something triggers this whether it be emotional scarring, depression, genetics, child abuse/molestation, addictive personalities.
A case of beer a day is not so outrageous for an alcoholic (in fact, that's pretty darn conservative to what I've seen!) LOL... but I'm sure she binges on a lot more than she may let on. Alcohol induced menatal deterioration (and even organ failure from alcohol) can cause the cookoos. Can cause frantic anger problems, psychosis too!
She would benefit to go to inpatient treatment. They may decide to do that instead of jail. Is she sentenced already? And in that...child endagerment, ya can't fool around with that. Better to keep them away before something terrible should happen.
You're a good friend to have such concern over this matter.