Depression can take its toll not only on the sufferer, but on their close friends and family as well. Other forumers are right to say she needs to see a psychiatrist and she needs to take her meds. The most important thing you can do for her is to be patient and give her support. Actly, this is just about all you can do. Its something she has to deal with herself. Some days will be harder than others. But when things get tough, just remember to take it one day at a time. Wish you and your family the best, ts.