Complex sentence: Working with Miss Level to find instructions for the use of plants, Tiffany becomes worried by a mysterious presence in the cottage, it turns out to be Oswald, a spirit that is an obsessive cleaner.
Split into simpler sentences: Working with Miss Level to learn the use of plants, Tiffany becomes worried by a mysterious presence in the cottage. It turns out to be Oswald, a spirit that is an obsessive cleaner.