My son's Ball Python woke him up during the night with very loud hissing sound. He immediately checked on her to see she had just vomited a lot of fluid. She also shed during the night which was a good full shed all intact. She seems ok today, just wondering what may had been the cause for her to vomit. Any ideas? She is in a 40 gallon tank with just newspaper and a water dish. She is less than a year old.