I would no more expect Princess to notify my wife if I cancelled than I would expect them to notify someone else when an authorized person cancels a reservation. Fact is Princess cannot make air reservations magically appear when none exist. The fault does not lie with Princess but with communications with your travel partner. Boycott Princess if you like, but I doubt that any other line would have handled this differently.
Crown Princess March 2017
Explorer of the Seas October 2013
Caribbean Princess July 2006, May 2010 & November 2012
Monarch of the Seas November 2008
Crown Princess November 2007
Celebrity Zenith November 2005
Enchantment of the Seas August 2004