She takes no medication for as a student at the age of forty plus, with the tuition fees, cannot afford to obtain them on a regular basis. Her mania I believe does occur complementary to her depresion. It is also very unwise for her to not be medicated.
Part of addiction is to push and push and manipulate and destroy those around them that do love them.
Her diet is spartan and I believe her energy levels are low.
She believes that level of drink is normal for her age, I do remember I did drink heavily in my early forties. Drinking at the described level (daily) she is very probably alcoholic as well as having to deal with her bipolar condition. Her continued drinking will almost certainly make her bipolar illness worse.
My girlfriend is bipolar, and displays the symptoms of cycling.
I am not sure if it is more than four times a year, but I believe that may be the case.