Have you even tried yet? On your normal feeding day offer her a similarly sized rat and see what happens. If that doesn't work then try again the next week and pre-scent the rat with mouse or ASF bedding. Keep trying for 3 or 4 weeks, she should be good for that time if she doesn't eat(provided she's a good weight now). Failing that, what is the big deal on just keeping her on ASFs? If you feed f/t you can just order a bunch online and keep her on the ASFs.