I suppose the CV's have planned to show Dev's redemption after they get back together for Soha's sake. I truly feel that this is the best way to bring about a practical redemption than showing sentimental dialogues or emotional breakdowns of the leads.
Dev will now have to stand up for not only Sona but also for Soha now. This will be a testing time for him to prove that he is now a changed man. He still loves his mother but will not blindly trust or follow her orders. He has to redeem himself in such a way that Sona can live in Dixit mansion with her head high without being insulted.