As far as I know, there are virtually no relationships between Alex and Ala Auersperg and the rest of von Auerspergs. Alex and Ala rarely if ever appear during the family gatherings, such as weddings: in fact, they don't even use their titles or the von Auersperg as their surname (just Auersperg, without von).
Alexander's & Ala's father, Prince Von Auersperg was divorced by their
mother and later he was involved in a car accident that left him in a coma
for a number of years before he passed.
Prince Von Auersperg was a ski instructor when Sunny met him.