It seems like you might be referring to "Molly Moon," which is a book series written by Georgia Byng. The series follows the adventures of an orphan named Molly Moon who discovers she has the ability to hypnotize others. The first book, *Molly Moon's Incredible Book of Hypnotism*, was published in 2002 and was followed by several sequels.
If you're looking for specific information, summaries, or themes from the series, feel free to ask! However,