Kavitha, I cannot accept your logic. Therinjae poi kinathila vilarathu eppadi. theriyama poi vilarathu eppadi.
Brindha already have a doubt after seeing Sudha's emotiions and the way she looked at her kanna. she somehow understands and now it came from Ashoh's too. But still she says that I will go ahead, because I love. Brindha is very selfish for her one side love. thats all I can say.
All our arranged marriages are happening with out love. later on they will fall in love. In Brindha's case if she does not have any love for her partner before marriage, it will come if partner shows.
Here she knows that Ashok does not love her and have a suspicion about Sudha. But still she is going forward? all she wants the person who she loves. she does not care about the person and the others involved with him.