In Queen Fabiola's case there are no surviving spouse and/or surviving children, meaning that she has freedom in determining her will.
People who easily say: 'Paola!' or 'Mathilde!' forget a few things:
- it is a public secret that the relationship between Queen Fabiola and Queen Paola (Princess Paola) never was a cordial one;
- Princess Mathilde is not all close to Queen Fabiola as you might think: she is just the lady whom is married to a son from her deceased husband's brother and there is no any blood relationship between them at all, Princess Astrid at least is related wo her beloved spouse ans was a favorite of him;
- a bequest to Princess Mathilde needs substantial death taxes to be paid and sometimes there simply is not enough 'liquid means' (cashflow) to overcome these taxes;
- Queen Fabiola is a deeply religious lady ans she has already spent considerable amounts for a nun-convent being build on the royal domain in Limbourg. The idea is not far-thought that Queen Fabiola's jewels will be auctioned for the profit of the congregation in that nun-convent which means so much to her heart;
- where there are no any blood relationships with other members of the Belgian royal family, but there is a relationship with her brother Don Gonzalo de Mora y Aragón, Marques de Casa-Riera and his son (her nephew) Don Luis de Mora y Narváez, Vizconde de Baiguer. From what we have seen, Queen Fabiola looked more close with her own family than with her in-laws.
Anyway, time will learn.