Clockwork Magician. Two Monarchies Sequence, #4

Peter has lived most of his life in the assurance of two comfortable convictions. One, that he is always the cleverest person in the room; and two, that when it comes to magic, he does not make mistakes. His ability to make-or keep!-friends has been less assured, and despite the fact that Peter enters the University of Mechanics as the youngest student in all of his classes, the disquieting conclusion that he might not always be the cleverest person in the room slowly begins to creep over him.
When he tries to impress his classmate, Miss Stoneflange, with his latest time-altering device, things go disastrously wrong. Now, Peter has a new conviction: namely, that whenever Miss Stoneflange is involved, something will inevitably go wrong. Worse, it doesn't seem possible for him to stop making mistakes around her. Peter will need to decide who is the biggest threat to the timely continuation of the Two Monarchies: Miss Stoneflange and her ability to set things wrong, or himself and his own rash determination to be always right.