Changes in Naina

Don't you guys think they've changed naina's character ever since they introduced separation track as if for the sake of the track.

Her "family over you dialogue to Sameer during confrontation felt so out of character. When all this time they had shown how much Sameer meant to her which is why she has always been sneaking out to meet him or did things for him despite being in a conservative family. Just recently during bday ep she told him he meant the world to her, no one loved her like he does, even after manhoos track ended she said the same during phone call. For someone who has been shown so in love with Sameer that she'd do so many 1^st for him (pre-bet phase) or participate in dance competition, so she could travel to delhi just to meet him or be so confident about her relationship that no matter what the world assumed about Sameer's love fading (delhi phase), she would not believe it or change her mind. Why so much changes suddenly?

I remember one scene after she sent sorry cake & samaina have a conversation near the water area, she said something like "i cant do something wrong that will harm her family's reputation so Sameer said "then in that case, we cant even be friends but she replied "haan lekin mera dil nahin maanta. That for me always defined naina. She has always followed her heart. For someone who was always shown determined about loving Sameer despite being in conservative family, why is she shown totally opposite, borderline heartless now?

Ok I get it, she went through a traumatic night, from car being broken to police station to seeing all the attempted suicide drama at home took a toll on her self esteem which resulted in believing shefali's words about breaking up with Sameer & ended up taking an impulsive decision. I understand this part well cos its very believable.

But normally ppl start to think over their rash decision few days or weeks later. But in the show, they've shown naina is determined about being separate from Sameer no matter what & its been months & still no change in decision, no second thoughts? This definitely does not seem believable if it were to happen in real life, especially for someone who's been in a relationship for 3yrs & so deeply in love with the guy.

Why is naina's character being changed for the sake of introducing a topic (caste system) of 90s which was non-existent in the show before.