Medicines and Alcohol

A co-worker of mine has been showing abnormal behavior on the job. She sent an e-mail message at work asking people if she can have some cigarettes, she had run out. (the e-mail system at work is for business related topics only). She called me one day to discuss a work related matter and then tells me her very intimate details of her private life. I have seen her park in handicapped parking lots simply because it was raining and she wanted to be near a grocery store. Some of the ladies went out to eat at a restaurant for lunch and she starts smoking a cigarette in a no smoking restaurant. She drinks and takes prescription medicines together. There are times when she talks she sounds as if her speech is slurred. We attended a workshop, we had an afternoon session discussing re-cycling. People were offering helpful suggestions. The presenter was embarrassed to say the least when this co-worker stated "I'm not going out of my way to recycle, it's sure not on my priority list."

I could go on and on about this ladies' abnormal behavior but this post would be entirely too long. Do you think the prescription medicine mixed with alcohol could possibly contributing to her strange behavior?