Nice looking BP. I have no idea why she stopped eating but they will do it sometimes for what seems like no good reason. I have a few snakes that go off food every year so it doesn’t phase me much. If you’re confident that your temps are dialed in I’d say just wait her out. I agree that a healthy animal won’t starve itself to death so just keep offering food every 2-4 weeks until she decides to eat again and know that they ALL eat eventually. Best wishes!