Alex didn't know about the conversation between Willy Yandell and Oliver Eberhart on him but he did find out from his puppets that the Yandell family as a whole was preparing to leave this Island in two days.
They were going to use the village under them in the west direction by the seashore.
A merchant Fleet under Yandell Family has already started to load the family heirlooms of the Yandell's onto their ships secretly from that village.
Willy Yandell had already transferred his assets to that village as he had already made a contingency plan like this long ago.
The mansion that the Yandell family used to live in for generation is now just an empty shell.
This makes it much easier for Willy Yandell to move out with his family, subordinates, and his movable assets and safely head for the Belmont subcontinent.