The Barkers do not have a good out look on imports at all.
The advise in the book is not the best, and judging from there success on breeding imported animals, it is not there strong point.

The best way to get a import to feed is to set it up in a dark rack system on cypress mulch with a ambient temp of 84*-86* and leave them along for 3-4 weeks. Give her water and other than that leave her be.
After 3-4 weeks offer a small live rat late at night, put a few lab blocks( for the rat to eat so it doesn't chew on the snake) and leave the room. Check back in a few hours or in the early am, (remember the rat has food) and the rat should be gone. If not let her go a few more weeks and try again. During this time do not bother the snake at all, fresh water that is it, do not handle her. After a few tries she should start feeding. The biggest problem people have with w.c balls is the set up. You cannot keep them in a freedom breeder on newspaper and offer f/k rats or they will never feed/breed. A dark small box in a rack system with cypress mulch and a few weeks off time with small live rats at night and every imported female we have set up has fed without problems. A lot of the females we have sold have breed the following year too, not all but a lot have so the 3-5 year time frame is bull.

Good luck with her and let her settle in on her own time. If your looking for more info on how to acclimate w.c females Ron Billingsly has a good article on imports that is a lot better than vpi's book.( Other than their w.c. info is a great book, but the w.c section is terrible)

Hope this helps.