Suffering is necessary.

^ I think Bob has got it right. If she has decided to give up religion, that's fine, it's her choice; there are plenty of happy & successful people in this world who live perfectly well without religion. In my opinion, she should resort to an effective coping mechanism with immediate effects. At this rate, it seems like she'll become depressed and lose all motivation. Instead, encourage her to participate in a fun relaxing activity such as a dance class, yoga, sport, martial arts, or something of that sort. Exercise produces endorphins and increases serotonin, dopamine, and those other happiness neurotransmitters in your body. Maybe even tell her to go on vacation to Caribbean or somewhere outside her environment, to relax for a few days and think about the meaning of life or whatever.

I would say that she is simply exploring the other side of a false dichotomy. Yin-Yang, good-evil, God-Satan. It's all energy baby!

Its her choice. I think that after meeting with so many things in quick time, any one can lose the calm and in that situation he or she is not what he or she is. At that time it is not right to judge someone. Let the temperature get low and then have a look again at that person.