Thank you for so quickly supplying this link.
"Had the desire" sounds like a temptation. You can have a desire (it pops into your head; it even repeats and persists) without "entertaining" it or "consenting" to it.
John Vennari interprets it as "she may have been tempted." Pope Francis indicates that if she were tempted, she resisted, because he praises her as an "icon of silence."
So this works out to be, not heresy or insult toward Our Blessed Lady: it suggests that she could be tempted, like her Son was tempted, and that like Him, she resisted temptation.
This shows her in a beautiful and sympathetic light, as one whose Sorrowful Heart is pierced by this most painful trial --temptation: yet she stand by her Son and is faithful to the end.
I don't understand why you find this offensive. It fits in beautifully with what St. Louis Marie de Montfort said (Tagline)