We know that the creative team didn't dare to use Mandar as a serious romantic rival, nor will his villainy have any consequences to uplift Raghav+Pallavi from the vortex of saying "I love you" and playing dress-up. It's unfortunate that the creative team is publicly telling viewers not to worry, the lead couple is safe, the story can be sacrificed to please a fanbase, and now even the dialogue is for shippers and not for the story. Knowing that Mandar will be eliminated is not suspenseful, and they haven't kept us hooked by slowly unfolding the secrets of Mandar's past, so they should just move on.
There is no reason for Pallavi to remain with Mandar and send coded messages to Raghav. She's not locked in a room and she has access to a phone, at least through Amruta. Any rational person would call the police (local and in Kolhapur) so that they can do their job: to investigate the attempted murder of Sharada and the murder of Devayani. It would be more exciting if Mandar was on the run.
Whatever Pallavi is planning, is it worth leaving Mandar free to commit more crimes? Is it worth sleeping in the same house with him, where every adult except Milind and paralyzed Sharada believes that Pallavi is still Mandar's wife? Mandar doesn't seem inclined to force Pallavi, but does she really expect to sleep apart from him, not embrace him etc., and just lull his suspicions with khīra? It's too dangerous, Pallavi; just tell the police that Mandar locked you in a room, and show them the divorce papers as proof. With Mandar in jail, you can move on to discover his secrets, and we won't have to watch the silliness of a married couple playing hide-and-seek in a public toilet.
Pallavi and Amruta, the two people in the house who know that Mandar tried to kill Sharada, decided to leave Sharada in the house with Mandar. Wouldn't it be more sensible for Pallavi to ask Mandar to take her out, while Raghav rescues Sharada? Sharada needs to be nursed by professionals, including physical therapy - or at least not to lie in bed in the same position all day!
Sunny and Mandar - why are you in a hurry? Just wait at a respectful distance from the ladies' room until your prey comes out. They can't stay there all night. The way Raghav drinks, he'll have to come out soon - his bladder is too gentlemanly to relieve in a ladies' lavatory!