What is the reason for her Insecurity? Is it rational for her to have negative feelings for Mishti? What did Mishti take away from her?
I assume you made this post to genuinely seek answers for the things you fail to understand in the show, the actual reasons for Kuhu's insecurities wrt Mishti, and not to just bash the character, so I will try to address some of your concerns based on my understanding, since I had also struggled to understand the motivations & pov of Kuhu
I don't understand the blame of it on BM and BP, they are Kuhu's grandparents, they have more kids to care about than making Kuhu the centre of their lives, isn't it expected that Grandparents will care about all of their grandchildren? I honestly don't understand how Mishti's absence would mean that Kuhu gets all attention, don't BP and BM have other grandchildren?
during baba track when Kuhu had come back to Maheshwaris, BM & Kuhu go out one night & on their return Kuhu confesses to BM that she had lot of fun & they should do this often & BM confirms that she got so busy in taking care of Mishti, (because Mishti needed her attention being in a vulnerable state) that she missed out on spending time with Kuhu, so clearly Kuhu didnt get the amount of love & attention she craved from her BM-BP because they were occupied with Mishti(who clearly needed their support & care atm)
another example is that when the maheshwaris get to know about kuku friendship (post Mishti-Kunal breakup) they clearly tell her to forget Kunal because Meenu insulted them
but Meenu also insulted them(Kuhu) by offering the rishta-swap, but BM accepted the rishta for Mishti
so clearly BM-BP prefers Mishti over Kuhu but it should not be a problem because Varsha-Shaurya are there to prefer Kuhu
but we have never seen any incidence where they have taken any decision without BP-BM permission/approval, because they are the head of the family so as their daughter Mishti is accountable to them directly
after kuku divorce reveal when Maheshwaris visit Rajvansh Sadan, BP asks Shaurya for his decision & he says he needs BP's suggestion to decide for kuku wedding, seeing all this drama Kuhu takes the matter in her hands & clearly refuses to sign divorce papers
Didn't Mishti help Kuhu and Kunal after her breakup with Kunal?
do you mean after Mishti-Kunal GD? yes she does & also confesses to Abir that 'GD tootne ke baad laga sab kkuchh khatam ho gaya hai' she was feeling guilty but kuku's love story gave her hope of establishing better relations between 2 families, which she thought were ruined by her rejecting Kunal
if Kuhu's motivations for helping Mishbir can be questioned then Mishbir's motivations for supporting kuku/Kuhu can be questioned too
What did Kuhu do? To get married to Kunal, she became a part of Meenakshi and Kunal's vicious plan against Mishbir and tried to break them up
Kuhu's later on herself confessed to Abir 'main pyaar mein andhi ho gayi hun', inspite of doing all this Kunal still gave her divorce papers, so for me it was a poetic justice for kuku, they had started liking each other (as seen in the Mishbir GD mahaepisode) but had to separate
Here too, Mishti was leaving India to make sure Kuhu marries Kunal, she was going away from her love to give Kuhu, the love of her life
Kuhu did not know of Meenu's blackmail for Kuhu, and Mishti revealed Kuhu's birth truth & insulted her, but then came back because Abir brought her back
does Kuhu know about all the facts in this incidence?
Kuhu got married to Kunal, who didn't love her, Kunal broke her heart on their wedding night, she got to know that Kunal used her all along, treated her like "Nothing", not even worthy of his hatred
What does Kuhu do? Blames Mishti, why?
because thats what Kunal told her, all this was a plan, to make Kuhu believe that Kunal loves her & then when the families fix their rishta Kunal breaks it, which later got to the point that it would be more impactful when Kunal leaves Kuhu at mandap and Kunal ran away from his wedding, so the Maheshwaris will be humiliated & will never consider Abir for their other daughter Mishti
the whole saazish was just to keep Mishti away from Rajvanshs/Abir
She got what she wanted, Kunal used her and blame goes to Mishti 👏
None blames Kunal, who used a woman to break his brother's relationship, Kuhu has NO bad feelings for people who USED her, instead she HATES on someone who HELPED her
Kuhu blamed Kunal as well, both pre-leap & post-leap
Who was Kuhu's support system throughout her divorce with Kunal? Abir
and Kuhu also supported him after his breakup
Mishti revealed Kuhu's divorce to everyone, was it wrong? Yes, did she go without blame?
Mishti was slapped in front of everyone
not in front of everyone, in front of Abinal who were present in the scene, & Mishti slapped Kuhu for pills fiasco too
(though I personally did not like both scenes, I hate this slap-fest, violence in any form in family shows just to add to drama is unacceptable for me)
What has Mishti done to Kuhu after her marriage with Abir? Is Kuhu letting her live a day in Rajvansh house without making her life a hell? What has Mishti done to her? Can anyone explain?
when Kuhu breaks the necklace she apologises to Mishti & tries to explain that it was accidental & she did not intend to break it, (she was angry for Mishti getting necklace but calms down as soon as she remembers Kunal's words 'main tumhe aise hazaar haar laa dunga') but Mishti refuses ti listen & decides to punish her by not letting her participate in the Shivratri preparations, even when Kunal 7 Abir ask for her help, Kuhu restrains herself & sticks to Mishti's orders
also:
kuhu came to know on her wedding night only after grah pravesh that abir brought kunal back during their 1st wedding when he had ran off, but she never blamed or even held Abir accountable or thought of him having a role in putting her through the whole fake wedding, she always blamed kunal for fooling her
after the kuhu divorce reveal, when Meenu talks to Kuhu, she clearly says that I love Rajvansh family but I cant stay in same house as Mishti & only agrees to give her marriage a 2nd chance & not leave Rajvansh house when Meenu encourages her that she should not leave her haq
during mishbir pehli rasoi, when Kuhu breaks the necklace she apologises to Mishti & tries to explain that it was accidental & she did not intend to break it, (she was angry for Mishti getting necklace but calms down as soon as she remembers Kunal's words 'main tumhe aise hazaar haar laa dunga') but Mishti refuses ti listen & decides to punish her by not letting her participate in the Shivratri preparations, even when Kunal 7 Abir ask for her help, Kuhu restrains herself & sticks to Mishti's orders