For what its worth here is my recommendation. Though I am in no way an expert at it I have been able to get more then 10 WC girls setup and eating.

You have to replicate a WC's natural setup. So that means dark, moist and quiet. A small dark tub works best (big enough for them, a water dish and a small amount of floor space - mine can crawl around their water dish that is it), cypress (I keep my humidity levels at 60-65% till they eat a few times) Larger water dish (helps with the humidity - and for some reason they seem to soak more then CB animals). Temps in the upper 80's ambient. Once setup leave them alone - check the water daily but unless it is empty (or they pooped in it) don't mess with it (a little cypress in it won't hurt them). Wait several weeks then try a small rat/mouse (live). If they don't eat wait another 3 or so weeks try again...repeat till they eat. I had one girl go 13 months before she ate with no adverse issues so 6 months is nothing for a WC provided she isn't losing weight.

Oh...WC's are notorious for having ticks so you need to go over her with a fine tooth comb. It is my experience that even one will keep them from eating.

Hope this helps
Sean