What is the author's style in Freaky Friday by Mary Rodgers?

The language of the novel is typical of a teenager of the time period, full of unique conclusions and quirky slang. The words are easy to follow, the flow of the book such an easy progression that it almost feels as though the reader is eavesdropping on a conversation rather than reading a novel. The book moves along at a quick pace, almost impossible to set down between chapters because the reader wants to hurry to what happens next.