King Felipe's relationship with his sisters is distant. He has had to work hard and sacrifice many things to save the Crown, while his sisters decided to always be on the side of Urdangarín and Juan Carlos, and have even challenged Felipe on more than one occasion.
We will probably never know to what extent, but Letizia's relationship with the infantas was not good, the former probably did not accept many things that happened in that house, and the sisters were envious because the commoner had a role that they had never had.
For years the sisters were somewhat estranged, but when Elena divorced Jaime de Marichalar she joined Cristina and Iñaki who did not like Jaime. The same thing happened with Juan Carlos, who got along well with Iñaki, but not with Jaime and Letizia. The divorce was unpleasant, and Juan Carlos and Elena tried to harm Jaime, while Felipe and Letizia remained more neutral, because despite all the problems Jaime has been a discreet man.
With Iñaki's scandals, Cristina sided with her husband, and with her father's abdication they both lost the influence they could have had in the House.
Both sisters work in private foundations thanks to their father's contacts, hold management positions and have good salaries. But they have always had financial help from Juan Carlos, who has financed their children's education and many luxuries such as cars or Victoria Federica's horse. Since Felipe has publicly expressed that he is going to renounce his father's inheritance, Elena and Cristina and his children are the beneficiaries of Juan Carlos's money.
At this moment they are trying to calm things down. Juan Carlos has begun to travel to Spain more frequently, and after Iñaki's infidelity and the supposed upcoming divorce, Cristina is also freer.
King Felipe has invited them all to the private party for Leonor's birthday, we will see if they all collaborate or if they once again defy and fail the King.
Thank you Lula for the summary. I am sorry for Felipe that he doesn't have a good relationship with his sisters.