Hi Riri and welcome,
You are right on calling it a crutch. As I said in the title it is getting old. That's slang I guess. But when you stand back without engaging the drama, it is very clear that it is a huge crutch that can not be argued with. Depending what day it is, it's either the depression, the headaches, the cough, the cold, the period, or she's tried to catch up around the house and is wiped out with fatigue for the next 2 or 3 days. That's right. Days.
So when you say alternative forms of treatment, are you talking about saint johns wart, magnets, tapping, chakras, or are you open to all possibilities or are you seeking any specific stuff? An idea rushed through my mind right now that seems too simple, but an alternative treatment is -walking- every day and exercise. Have you tried that? Silly as it sounds, I believe it enjoys some success. The important part is sticking with it.
Let us know how you're doing and how we can help.
Peace