The obvious reason for UB's yearnings to make Sonali her bahu is nothing but due to her bitter hatred towards CC. In other words, she wants a bahu that will worship her unlike, CC who is a modernised individual. In addition, her first meeting with CC was not a great start.
However,...
Sonali does not seem dumb like Ranjanna or Sanjana. She can speak English. In addition, she does not look very homely for e.g. she does not wear a saree. Perhaps, she is not really bothered with bringing a traditional bahu into the house but just does not want CC to be her bahu.
Say for example, UB wins in her mission to convince Manav in marrying Sonali ( that is highly impossible) Would dadaji allow that to happen? I reckon he would not, for the simplest reason that he respects 'marriage.' He hangs around with his wife's ashes all the time to create that feeling that she is always with him,which just shows how much 'love' means to him and how much he respects 'marriage.' Will he allow such disasters to take place in the family?
Something is telling me that he will be the person to collapse UB's dreams...I might be wrong...I just wanted to share my ideas with you...
Please kindly note: that these were just my ideas and bashing will not be tolerated.