None of Beatrix's grandchildren had/have the style of HRH anyway,only Amalia,Alexia and Ariane have that since birth.The others are Counts and Countesses without the style HRH,always were.HRH Princess Mabel of Orange Nassau is styled as such as the spouse of a HRH takes the courtesy title.She,like Laurentien,have a courtesy title as the spouse takes the title of the husband.Except Máxima,she was styled HRH in her own right at the moment she married Alexander,the Prince of Orange at the time as we know.