Prerna has many times proved in the last 250 episodes that she is a strong & independent girl or lady.
Otherwise she would not have shown the courage to help her friends to elope.
Otherwise she would not have decided to sacrifice her life for her family.
Otherwise she would not have filed a case against Ronit, son of the powerful minister Choubey and brother of the very famous Komolika.
Otherwise she would not have shown the courage to come back to BB after getting insulted.
Otherwise she would not have survived in BB where she was insulted & harassed daily.
Otherwise she would not have shown the courage to expose Komo, after knowing how dangerous she was and was behind the death of her father.
And finally she would not have taken on her shoulders the responsibilty of meeting Bajaj, especially when she was the only one apart from Anu who knew how dangerous he was.
What she lacked is the skill to use her brains and the discerning power to know who is black, grey or white. Also, at times she lack confidence in herself whereas at times she thinks she is the only mahaan in this world. That is it. So, if some new viewers, or even EK wants to portray now that Prerna is not strong & independent, in no way we AnuPreians will accept it.