Aziz helped Maryam---get her son back, and also help her go to Germany. I don't know why she decided to go to Germany. Oddly, it didn't seem as if Ali, OMAR or Khaleel, or even Hannan, did much searching for her, okay they did some searching, but towards the end, it seems that they just gave up. Omer found out that Shareen isn't really in Australia---and was actually still in the country----only Deena didn't tell him, but I'm sure, that Omer suspected that Shareen's still in the country, and I remember him following Deena.

Deena didn't go to Italy with her husband, of course she had to stay, for work reasons.