Agreed! Someone else won't care how sweet it is - it'll be dinner.
Have you ever offered your Dum f/t? If not, just warm it up well and be prepared to do the zombie dance - she might just surprise you and take it right away. If you've tried it before and she refused, you can save some used bedding from the live rats you've had (this one you have now will give you a good opportunity for this if you keep her at least a couple of days) and drag the f/t rat through the used bedding a few times. That might help scent it with a more "live" scent. One other thing I've found that helps is to simply lay the rat down a couple of inches in front of the snake, then use the feeding tongs to "scratch" in the bedding behind the rat - the sound and vibration can trigger a feed response and some snakes can be a little intimidated by the dancing zombie.
Good luck - let us know how it goes!