I would be willing to bet that the pinkies are to small for her. My female baby wouldn't eat pinks so I decided to try a fuzzy/small hopper and WHAM! she got it. I would say that if she is new for you that switching her from her normal enclosure to a feeding enclosure is stressing her out a trifle more than needed. I have never had a "feeding tub" my snakes have always fed in their enclosures and I will say that from my personal experience it doesn't cause enclosure aggression( unless you breed prey or have a pet rodent). Have you tried prescenting? Try feeding your snake at dusk or right after nightfall. I really hope this helps!