Beautiful post ... The bond Ishaan and Mishti share is precious... I have loved Mishti more for the unwavering love she has for her Popsie, she never gave a shit about Kunal in spite of knowing he is her biological father. Not even once , I guess (I've read the updates even if I haven't watched) she had acknowledged him as her father and not her Popsie even to herself... Love her more for that. IshTi's scene was very emotional...
Even today's episode, she clearly understood that Pari's exclusion might hurt him , and she went to him assuring that she can never give her Popsie's place to anyone coz even she has deep down understood that Kunal was merely a sperm donor...
Coming to the much discussed topic of Pari, being Nandini's replica, well she is her daughter after all and what you can expect from her ? Nandini was an opportunistic narcissist. Her daughter is just like that. Nandini, all she wanted was a male partner who could save her protect her. When she found that savior quality in men she fell for them in spite of them being asshole (In Rajdeep's case) and friend's husband(in K's case ) the very friend who saved her from her abusive married life.
Now her daughter wants a complete family, and when she came to know that Kunal's mom Radhika is her Dadi, she conveniently forgot about Ishaan being a part of their family at the moment... Not bashing her, but just saying she doesnt seem to be grateful to people she really owe , which was Nandini exactly like.