As the person who shares a home with her you have every right to ask that there not be alcohol in the home. Especially given everything you have written about. All that beer in the fridge is just insanity. It is also cruel. Her behaviour is erratic but your not standing up for yourself does not help. Remember silence=acceptance? Do you really want all that beer in your fridge?! I am puzzled as to why you don't explain yourself to the self help guru. And I hope for all the best for you.
Hugs
Soph