The actress filmed her final scenes as Zainab in December after deciding to leave the BBC One soap, and her exit episode will air in early February.
Speaking on This Morning today (January 14), Wadia revealed that she would have been happy for Zainab to have a tragic ending.
Pictured: Nina Wadia on This Morning.
Asked whether she requested for the door to be left open, Wadia replied: "No, quite the opposite! I thought it would be nice to have a big storyline - if they got rid of her in some horrific car accident or something.
"They said no. That was a really nice compliment and I can't thank [executive producer] Lorraine Newman enough for that. She's amazing. They just want to leave the door open in case I want to come back and do something, or if they want to bring her back. So it's all left wide open."
Revealing why she decided to leave, the actress explained: "Oh gosh, lots more to do with my life. I've been there for five years and I just feel like it's time for me to move on and do other things.
"To be honest, this was all inspired by the fact that I had a very tough year last year. I lost a couple of very dear friends, kind of around my age, and it just made me realise how short life is. I want to get out there and do other things. There's so much more I want to show."
Wadia confessed that the departure of her on-screen son Marc Elliott (Syed) also influenced her decision to bow out.
She said: "It was a big factor for me. We're very, very close friends and we laughed more than anyone else there together. Everyone has a best friend there, someone who they just really connect with. When he went, I felt a little bit out of sorts, just a little bit. I don't think it helped much."
EastEnders viewers have recently seen that Walford newcomer Ayesha Rana (Shivani Ghai) has a crush on Zainab's partner Masood (Nitin Ganatra), which could cause problems for the pair's relationship.
However, asked about Zainab's exit plot, Wadia confirmed: "It's not just about [Ayesha]. There's a lot of issues - it's a long, long marriage that they've had, and a lot has happened in the past few years. Of course, being soapland, it's all condensed.
"But the way they've done it, it's some of the nicest scripts that I've read. It really works for us, and I think it's because of the combination of Nitin and myself.
"As the Masood family, we're all very close. Even Himesh, who plays our son Tamwar, I adore him. We are actually like a real family. They laugh at us on set because we go to lunch together, we go out together. We just really love each other."
Away from EastEnders, Wadia is hoping to star in a potential comedy series named Fortunes Fall, which is currently being written by her former co-star Elliott.
EastEnders continues tonight (January 14) at 8pm on BBC One.
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