Carmen Calvo, Vice President (deputy PM) of the Spanish Govt. But I do see any intention in her case.
Also in the video: only 2 ladies curtseying: the President of the Region of Madrid (at 12.55) and Ainoa Arteta, an opera soprano (at 15.00)
And interesting to see Javier Solana, former Minister , NATO general secretary and other relevant international positions, introduced as Knight of the Golden Fleece (at 14.20)
No member of the nobility invited, as it was tradition. Surely due to reduction of people attending due to Covid.