Paul
From a rabid anti-royalist [c'est moi], I'm sure that it didn't take such an 'honour' as this, for you to be made aware of your wife's special qualities - which she has probably had, or developed, for many years, if not all her life.
Naturally this particular recognition may make you feel good but I doubt it's the prime motivation for her good works which seem to stem from a genuine need to help others. This alone would create a sense of pride.
Unfortunately, we have to be aware that powerful authority figures - politicians, CEOs, teachers, . . . - are desperate to be associated with our community's genuine high achievers in the hope that they are perceived, as the bestowers of such 'honours', to have even greater status than that of the recipients. It's an intrinsic part of the power game.
My congratulations on your choice of spouse, since a failure to offer them would be perceived by many to be bad manners.