I have no proof. I am merely relating what I know to happen at that particular event based on personal knowledge and saying it cannot be used to prove she is Catholic. I have no idea if she is or isn’t. But the priest standing there offered her the rosary and I heard her say “oh, I would love that” and then the Pope blessed it for her.
Now you’ve really got me confused! It appears you DO have proof - in a video, right? I haven’t seen any footage of this event.