Tossing in two cents. Feed her in her cage. Not only will it stress your animal out less it will cause you much less work in the end.
When I first started I fed in tubs that were not the snakes enclosure because that is what the previous owner of the snakes told me to do, I listened to all that mumbo jumbo about needing to do that to avoid getting them used to being fed in their enclosure and therefore associating the opening of the cage and me with food which would = bitey snakes. (run on sentence there)

All it did was put a new owner in a situation where I had to deal with large snakes still in full on feed mode when I would attempt to take them out of the tubs. On top of that both actually began to associate THOSE tubs with food (because that was literally the only time they were in them) and would strike every single time the top was opened. It was not a fun experience for a first timer. I now have a rack system and feed all my snakes in their tubs without taking them out to move them around. Much less stress and I've have no issues with the "Oh the tubs open, your hand must be holding food, let me take care of that for you" issues that I was having before.

Now I don't say that my experience will be everyone's. I've read that plenty of people that feed that way and don't have problems, but in my opinion you're more likely to get bit with all that transferring than just feeding in tub and it stresses the snake to boot.

As for the feeding issue wait a week before offering food again. Try to feed in the evening and scenting the room beforehand. Be patient. She will eventually eat. I'm dealing with a couple of new arrivals refusing food myself. Sunday made a full month of refusals and I'm about ready to call a hunger strike!