Why do you think the author(Emily Rodda) wanted to make you think Conker and Freda were good then bad then good e.t.c?

I think Emily Rodda purposely made you think that way, because she wanted to keep the reader entertained and attached to the book, so if the reader thinks Conker and Freda are good, then bad, then good, then bad e.t.c the reader is attached to the book cause they want to see if Conker and Freda are good or bad in the end, and the author also does this because it gives the book a twist so that the reader is not bored out to death by a plain boring text that has no twist, meaning or creativeness in it. In the end Conker and Freda were good, the author just made you think they were bad by making them do something that sounded bad, or that Leo and Mimi thought was bad, or  what Leo and Mimi thought was bad, or just doing something that sounded suspicious and bad was what Conker, Freda and sometimes Hal and Tye did for a good cause.