You are totally right.You see some people are so unfortunate that even if their good fate lands in their lap and does a lap dance, they would still push it away.
Dev, Neha and Ishwari are example of those people.
They are taking Sonakshi's kindness and patience as her weakness. If she wanted, she could have shut all of them showing them their reality in plain language and walk out. And unlike some families, hers won't blame her and force her to return..
But she didn't do it.
My mother is like Sonakshi (I obviously am not). If someone slaps her, she'd extend the other cheek. But one thing she told me when she was really angry on someone that don't underestimate kind and patient people. They are willing to bend for other's happiness but that doesn't mean that you can break them. The tree that can bend in harsh wind often survives rough weather better than unyielding tree that can't move to let the rough air pass.
She is polite, nice, kind and patient. But even her patience has a limit. And the day they reach there, she will erupt and then Dixit family regret that they didn't behaved better when they had a chance.