Go to Walmart and buy a six quart tub, line it with paper towel and a water dish and stick her in the incubator if you don't have other heating for the tub. The six quart tub is $1.
Then after a few days, put the live prey item in the tub with her and leave her be for at least an hour.
At some point, if she's still refusing, you're going to need to consider assist feeding her.