I am not sure if she meant it at that point of time. She might have meant it to be real. Her reasons might have been genuine too.
But writers have chosen to not reveal her intentions to anyone except Raghu (who is dead) and Ratan (who has a soft spot for her and is willing/eager to believe her).
Not even Priya or Yash know about it. It was a good move. They can use it however they can in later storyline.