The pair's clashes have been on the back-burner for a short while, but tension flares up again as the custody battle for Simon gathers pace in the coming days.
When Carla (Alison King) learns that Simon has told a court officer that he'd prefer to live with Leanne, she worries about the impact his harsh words will have on Peter (Chris Gascoyne).
Deciding to give Peter some space to sort things out with his son, Carla heads to the pub - where she soon finds herself in another argument with Leanne (Jane Danson).
Stella sends the pair into the back room of The Rovers to avoid a scene in front of the punters, so Carla seizes the opportunity to lay her cards on the table with Leanne - admitting that the current situation at the flat is difficult.
Carla suggests that Leanne should do what is best for Simon by moving away to London to give him some space, adding that they could re-establish contact at a later date.
The Underworld businesswoman adds that she could even give Leanne some cash to tide her over until the divorce settlement comes through. However, when a furious Leanne sees this as a bribe, has Carla made things much worse?
Coronation Street airs these scenes on Friday, May 25 at 8.30pm on ITV1.