boy are you ever in the hotseat. So many emotions come into play here. Ethics, compassion, sense of duty, values, rules, allowable, integrity...and on and on..

I really don't know what I would do, but action does need to be taken. How close are you to her? Could you sit down with her and have a heart-to-heart about things in a professional and curteous way and explain how concerned you are and maybe suggest she see a doc? Is it YOUR place to do this? If not, I believe I would go to my immediate supervisor and ask what they thought you should do with the information. Just some thoughts...and not even my final thoughts, but certainly my initial ones.