Poison

I see what is in future for asaya story line. We all so precap. She will be asked to leave . We all read a post that Asad will proposed zoya at the airport. But what I keep thinking abt is how poison mystery will be solved. How humera will be saved? How zoya will be cleared from blame ( obeviously then only Asad will propose) and when zoya is cleared from blame mean tanu is caught doing it? Would it be her exit?