It may be too late, between the tube feeding and vomiting, but stop everything you are doing and set her up in a much smaller cage. Go to the link Daniel provided above and take Deborah's advice. Once set up properly leave her alone for a week or so. I would give her at least two weeks from the last time she threw up. Then get a live hopper mouse and throw it in her cage. Live is fine, just watch and make sure the BP eats the mouse. If not, remove it after 10 minutes or so and try again five days later.