Regarding that tweet by Princess Petulia, her sentiments are supported by a very large number of Spaniards.
You see Catalonians and Basques see themselves as separate from Spain. There are even secessionist movements in both regions. In past years when Spain flopped at the world cup, people from Catalonia said they did not care because it was Spain that lost and not Catalonia (ostensibly because almost all the players were from Madrid)
When Spain finally won the world cup last year, Catalonians celebrated by saying it was Barcelona who won since many of the top players from Barca. And believe it or not, many Madridistas refused to celebrate saying that it was catalonia and not Spain who won.
Such are the divisions in Spain. There is some bad blood because of the repression by King Franco on catalonia