Of course you see what you want to see, from what I saw, she had normal events last week, the week before, two weeks before, don't see anything wrong with it. Maybe after the Palma incident, she had a bit stress, but it didn't affect the events. Letizia also helped Felipe improve his speech, his communication skills that are all essential for his kingship. Of course if some people don't want to see the improvement of Felipe, it's OK too.
Behind Mathilde's smile, I saw a very stressed person. I still remember at the time of her engagement, how young and lively she was, now she often dressed/looked like a 60-year-old.
I don't think Letizia actually improved Felipe at all (in his role as Prince/King, I do think he's far much more grown since he got married, as a person), I've known him my entire life (literally speaking since I'm just a year younger than he is and I grew up in Spain) and he was always ready to be King, had a kind of "gravitas" since he was very young, always very aware of his role, always ready for whatever was thrown his way, he has always been great with people, specially with children, tend to put everyone at ease.
And by the stressed out part, I don't mean after the Palma incidents, I think at the beginning she was first (understandably) nervous, taking on a role that was completely new for her, that's a given and an "acclimatization" period was something everyone expected to happen.
Thing is, she's been stressed/stiff for 14 years now, doesn't really look comfortable and sometimes she can come off as "arrogant" because she tries to put out a veneer of confidence that doesn't seem to come from within.
And for Mathilde, I think it's deliberate on her part, Philippe has gone gray and the age difference is starting to show for real now, so she tries to look older (YUCK to the helmet hair tho
) to match him better, I like to see her make-up less in her holidays, she looked beautiful in the latest pictures we saw of her in Spain, enjoying life with her husband and children, I like that she's never out of place anywhere or doesn't look utterly stressed out when she has to go out and perform her role.