Princess Justina Albertina - which by the way is a fun name to read over and over - is a spoiled princess who throws a fit if she doesn't get her way. She wants a pet and makes her nanny keep searching for the right one until the end of the book when the last pet eats Princes Justina Albertina.
Quite honestly this book is silly and empty. There is no talk about how the fit-throwing-princess is wrong to throw fits, and the ending is quite abrupt and a little scary to some. You be the judge, but I say there are better books to read!