Mahira had a daughter, mahira's death, zain left?

Can someone please explain all the above to me please? How did mahira have a daughter, how did she die, and why did zain leave and go to live in london?

God knows what happened in this show. I saw few scenes last week and from the looks of it, that is Mahira and Rehaan's kid. Rifat called Mahira as characterless. No idea how Mahira died though. They haven't said anything about it. From the dialogues it looks Zain got into some problem and Rifat used Fawad to save him. That made Fawad against her and Zain too left her when he found out something (no idea what).

So, they didn't exactly show her die in the show?? I've all the episodes post leap on Hotstar but I'm not going to watch the pre-leap ones.

Last episode showed Maher remembering Mahira's death. Mahir was shot dead when Aliya was an infant. Who shot her? We don't know. It's not shown. I strongly feel Aliya is Rehan's daughter. Because zain didn't have an attachment or pain when Meher told about Aliya. He was just blank