My 2 cents. I may or may not make sense.
First Aani and Ruby, I hear you both on the potential this incident can have on Ishra relation. I too believe that it will ultimately lead to Ishra put down another barrier in their relation - accept to each other that they are a couple, husband and wife. But that is not the point IMO coz the journey should be as important as the destination. Here they have put a serious dent on the character Ishita. People are not recognizing Ishita lately.
Ishita putting Shagun on the bed coz for her the bedroom is not yet their sanctuary is not valid IMO.
Why? Simply because there is something called sanctity of marriage, a code of conduct in marriage. Whatever the state of the relationship, once one decides to marry one has to abide by the code of conduct and I think I don't even have to say how much putting ex wife in the marital bed is so against it.
Let's go back to accident track where Raman has gone to the picnic with kids and ex wife. That was so against said code of conduct and then too I have criticized him. It was wrong of him, period. What was Ishita's first reaction back then? She was agitated, restless, shaken. She knew it was wrong but sadly she didn't claim herself as Raman's wife and put her foot down.
Like I have said I was against this decision of Raman but I could ultimately move on because contrary to what is currently shown with Ishita, Raman then immediately knew it was against the sanctity of marriage, he wronged her and he knew it. He was remorseful and ashamed. This is not seen in Ishita.
This also put a question on Ishita's view of their marriage and whether she wants to work on it or not.
The mixed signals given by Raman is invoked to explain Ishita not working on her marriage. IMO the only thing that Raman didn't do is voice the "I Love you" otherwise his actions speaks louder than words. He has even vocally given clues "Shagun is only mother of my children, nothing else", "you are my wife, I won't leave you", "we are happily married, we have two children", "a husband is always hurt when his wife is upset", "we will make our own memories", "it took me six years to move her (Shagun) out of my heart" to cite just a few.
While I agree that it feels good and reassuring for things to be voiced then I also think that it is equally and maybe even more important for it to be felt. Words can be beautiful but it can also be deceitful, meaningless, hurtful.
Why look only at his taunts and not at all the times when he was possessive, caring, mesmerized by her beauty. She has sensed his insecurity over Subbu. Ishita has felt it all, has seen it all. She knows his taunts are a facade. She has even recently felt his desire for her. She was the prime witness of his emotions. How can we say that she feels not beautiful to him, not wanted by him simply because of his taunts when she has felt it all, understood his facade (felt all his aforementioned emotions) ? It's contradictory to me. She is in love with him, has started to realize it and has sensed that the status quo has shifted but still needs Raman to be vocal about it to start to work on marriage?!
Ishita either has not been vocal and has not even been as demonstrative as Raman. He too has baggage. He too has been rejected and deemed inadequate as a husband and father but we still see Raman working on their marriage.
@on Raman not removing Shagun from the bed -
Let's look back at the scene. He is ready to apologize to her. The doorbell rings, he opens the door and is completely shocked at seeing Ishita with a drunk Shagun behind it.
He reacts "have you lost your mind", "how can you even think I'll let THAT woman into my house".
He is then confronted to a wall, Ishita's attitude is of it's my way or the highway kind "I AM bringing Shagun inside whether you like it or not". He is angry, frustrated and it strikes him then that Ishita is not going to budge...He lets her into house, questions her sanity, she gives explanation. In said explanation, not an once of remorse, of sorry, of uncomfortableness is felt from Ishita...meaning that Ishita has already made up her mind, she didn't deem it important to ask for his opinion, she didn't consider his and the entire household's emotions, she didn't spare them a thought. Family comes, asks for explanations, some taunts and he could not take it anymore...before he does something he will regret, he goes from there to calm himself down.
Now he comes back and his mother tells him Ishita has gone crazy and to handle her. Shagun is then already semi unconscious on their bed, Ishita herself has put her there...what is the point of creating a ruckus? His wife has already decided for all and was adamant on it.
It's painful to see Shagun back in his bedroom but what is more painful is that his wife, someone he loves and whom he thought cares for him and family, is responsible for it and doesn't even seem to realize the impact of it all...Ishita has seen enough, have heard enough to know how much Shagun has wronged the Bhallas. It was clear from his speech when she comes offering him water "what do you think of yourself", "this woman has wrecked my life", "it took me 6 years to recover and yet you brought her into my house, my bed", "how could you"...