If she is a just a baby you might try moving her into a 5 gallon tank and putting a couple items in for clutter. We had a similar issue with a small hoggy and found it was better at that size to have a smaller enclosure and to just use paper towel as a substrate.
Have you tried offering a live mouse pink to her? The movement may help stimulate her to eat. We have BP's as well and found it was better to thaw the mouse pink with a rat pup or other prey item that had hair on it and she was much more interested in it than just the thawed pink by itself.
Last thing, how many hours of light is she getting? We make sure ours has the sunlight that's available but I also keep a UV light on for at least 12 hours a day. The shorter daylight may be triggering her to slow down like brumation.
Not sure any of this will help but it is our experience. Best of luck to you.
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