Her alter ego has recently grown close to gambling addict Karl Munro (John Michie), the partner of Rovers Return landlady Stella Price (Michelle Collins).
The 45-year-old actress, who has played the Alahan matriarch on-and-off since 2001, told Soaplife: "She's having a massive personal meltdown.
"She needs some time and space to gather her thoughts - and to have time out from Dev (Jimmi Harkishin)."
When asked whether Sunita could have an affair with Karl, Gulati said: "I think if she could get away with it she would. Stella's her friend and she would feel guilty.
"But Karl has added a level of excitement to her life. He makes her feel special - and that's what has been missing with Dev."
> Coronation Street Karl won't let Stella go, says John Michie
> Coronation Street Michelle Collins tips Stella to stay with Karl
Watch a preview of Karl's confession to Sunita about the Rovers robbery below: