Ah, I thought this was a BP you'd had for a long time that had hit the 1000 gram wall, not a new arrival. Contact the prior owner and ask how she was kept, maybe there's something you do differently that's throwing her off. Could be tub size, substrate, hot spot temperature, her enclosure location if you have it in a busy part of the house and she's used to quiet... there are a lot of possibilities.

Or... she may only want to eat every two weeks.