From my own experience -
I think there is a difference between bipolar and depressive. Personally, I just have the depressive episodes, of varying intensity, and not the “manic” ones.
You don’t say who diagnosed your friend, but she should definitely see a psychiatrist who specializes in this. Sometimes other disorders, such as OCD, are mistaken for depression. It’s important to know what you’re dealing with.
The medicines can be a life saver, but there is no one right treatment - the drugs act differently for everyone. Atavan, for example, made things worse for me. Buspar seems to work well at a low dosage, but that’s just me.
A certain amount of trial and error will be needed to find the right drug and the right dosage. She should definitely stay in close touch with her doctors during this time. And she needs to be absolutely honest about ANY other drug or vitamin or herbal she takes, legal or otherwise, since the drug interactions can be extreme.
I’ve learned to identify certain symptoms and thought patterns. Sometimes I find myself afraid to open the curtains, for example, or it’s too painful to take a shower. I’ve learned to be able to recognize this as being an irrational attitude produced by my condition. Sometimes I can push through, sometimes not, but it helps me to know it’s just a side effect. Also, I can tell people if I know I’m going through this.
For yourself, I’d say don’t hover, and don’t emphasize how painful it is, or how sorry you are. Don’t do anything to make it seem bigger or worse or more insurmountable than it is. Treat this like you would if she had high blood pressure, or diabetes. Unfortunate, and annoying to take the medicine, but quite treatable, and nothing that can’t be handled.
Listen, and emphasize, but don’t be afraid to say, "now, you know that’s not real - that’s your depression talking. In otherwords, don’t let her emotions dictate reality, so that if she’s all upset, you’re all upset. I’m not sure I’m saying this right.
Attitudes towards depression are changing, as people learn more about the disease. I believe that depression is covered by the ADA, so if you’re in the US, you might want to see if that applies to anything in her situation.
Finally, just like alchoholism, like any illness, she needs to be responsible for her own treatment (unless she needs to be hospitalized, but at that point you’re usually beyond simple depression.) If she will take her medicine, great, if she wont - her choice. But you can’t obssess about it, or try to make her do it. It will only work if she wants to.
Good luck. God bless.
Meghan