Stinking Beauty by Elizabeth A. Reeves

The witch was dead.
But, so was the princess, which meant nothing short of a catastrophe.
Grace is a reluctant Fairy Godmother in a world dependent on keeping Magic contained. In order to do this, Grace and her fellow Fairy Godparents enact strong spells in the guise of Fairy Tales. These spells work to calm and control Magic and keep it from reverting to the Chaos it originated as.
It’s a tough job. Fairy Godparents are looked at as heroes. It is the career all young fairies dream of.
Except for Grace. She has been dragged unwillingly back into the career that her parents and ancestors have made famous. A descendant of the original Godmother, she has high expectation riding on her– and she has done everything within her power to avoid the whole mess. Now middle-aged, she has been dragged from her failed attempts at other careers, right back into the world she had tried to avoid for two centuries.
Now, here on Grace’s first case alone as a Godmother, everything has fallen to pieces. The Sleeping Princess has been found dead and… stinking. And Magic is already beginning to act strangely.
Grace should have stuck to baking.