Why didn't Aouda remain in Hong Kong?

Aouda's wealthy relative no longer resided in Hong Kong, thus, Phileas Fogg offered to let her join them.

Mr. Fogg repaired to the Exchange, where, he did not doubt, every one would know so wealthy and considerable a personage as the Parsee merchant. Meeting a broker, he made the inquiry, to learn that Jeejeeh had left China two years before, and, retiring from business with an immense fortune, had taken up his residence in Europe--in Holland the broker thought, with the merchants of which country he had principally traded. Phileas Fogg returned to the hotel, begged a moment's conversation with Aouda, and without more ado, apprised her that Jeejeeh was no longer at Hong Kong, but probably in Holland.