Hi mlfsandiego, I am very sorry about your friend. The odd thing about depression is that there may not be any one thing about a persons life that is "so bad" for them to feel depressed but yet they still do. This isnt something they bring on themselves or wish for, it is a very serious, devastating disease that claims many lives each year due to people who ignore the symptoms of it or refuse to continue treatment.
Dragging your friend out of bed isnt going to help matters. What I would recommend is popping over there and sitting her down and just telling her how concerned you are for her and try to encourage her to seek help. If she is on cymbalta then it is apparent that 1) either she stopped taking it or 2) it isnt being effective for her. Either way she needs professional help as soon as possible.
Please do keep posting and let us know how she is doing. Good luck and take care