Couple of suggestions, and if you're already doing this just ignore me. I would try to feed in the evening, the later the better. Personally I like to wait until around 9-10pm after all my reptile room lights have been off for a few hours, then I feed. I would also skip a week or two between feedings. So say if you try to feed tomorrow 4/2, and she refuses, wait until 4/9 to try again, if she skips that, wait 2 weeks and try again, and then try every 2 weeks after that.
The hunger always wins out eventually as long as husbandry is correct. Your problem sounds a lot like your snake never had a chance to settle into their new surroundings. If you brought her home in December, and started handling before she was eating for you, there's a good change that that's why she's on a hunger strike. Now that you've moved her back into a tub, once again she has a new enclosure to get use to, so you're essentially starting all over.