Like I said,
Like Dheeru says, "Woh doosron ka dard samjh thi hai." and unfortunately, she is yet to see that side of Satrupa's. Yet to see an anguish, which dominates the wronging Satrupa did to her all those years back. If LM want her to support them, they have to open up. She is not aasteen ka saanp. She is like Abhimanya when he entered the chakravyuh - with half knowledge. And that is more dangerous than having no knowledge at all. They cannot expect her to see through - when such grown up mature people had once been played by Sudha. She is a mere girl.
If she doesn't understand the reason behind why her actions shall have dire consequences, how do you expect a warm blooded teen like her to listen to those, who have been hers for merely few weeks.On what basis should she support a family, which has not taken a single step to support her or any of her action. Insulting her background at every point. As if they had the right to do that. She might as well believe another stranger - who atleast seems to have genuine pain (according to her).
LM say she is bad. So ? According to her, LM is also bad.How do you expect a girl to develop trust for these strangers, who have caused nothing but disappointment to her. She might as well believe the plausible story. She is just aghast at the way LM dismisses things off, and here is this lady who was abandoned just like herself. She empathises.
They are themselves unsure of what actually happened in the past - and where to start and where to end. The threads of relationship are so entangled. Dheeru, Our Lord Krishna, is right. We need to go where it started. We need to know Sudha, long before he entry into Lal Mahal. Till then, no one can justify their actions completely, and will continue to watch in despair, and blame each other.