She was just following her mother and she thinks it is a game.
Padmini did not want to tell her because she is too small understand and maybe did not want her to hate her father.
Trishna only knows the are just doing it so that her father could not hurt her sister.
So when she grows up this could lead her bitter towards her sister.
In the van she was fascinated with the things which could also mean she would want the luxuries and the limelight when she grows up.
She might not remember her fathers cruelness but might remember they lived in a big haveli with lot of luxuries. And just for her sister they have to leave the place.
Your thoughts?