The star's alter ego Amira Masood leaves Albert Square tonight after finally discovering that her husband Syed (Marc Elliott) has been having a gay affair with Christian (John Partridge).
She told BBC News: "We were quite looking forward to this moment and we're both really excited about playing these scenes tonight. It was really emotional and really quite traumatic and really hard for us when we were doing it."
The 28-year-old actress, who quit the show to pursue a pop career, added: "She does leave but it's who she leaves with, and [under] what terms?"
Meanwhile, Elliott said: "I think the audience is ready now to see some sort of conclusion to a story that's been bubbling for a bit.
"John is brilliant and it's been fantastic building up to this moment, and we've had lots of emotion along the way."
EastEnders airs tonight at 8pm on BBC One.
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